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Digital & Internet Fundamentals
How devices, files, the internet, cloud and everyday tools actually work — the mechanics under your digital life.
How devices, files, the internet, and the cloud actually work — the mechanics under your digital life, taught for people with no technical background. Courses and guides from Khan Academy, MDN, Cisco, Harvard CS50 and more: 72 resources (71 free).
API Beginner Path (Postman Academy)
Postman Academy's free API Beginner learning path: what an API is, how web APIs work, and your first real requests in Postman. Short self-paced courses cover endpoints, HTTP methods and status codes with hands-on practice in the tool professionals use. Built for absolute beginners — no coding required to complete it. From Postman, the API platform used by the vast majority of Fortune 500 companies.
Cisco Networking Academy: Networking Basics
Cisco Networking Academy's free Networking Basics course covering how networks connect devices, how data travels across Wi-Fi and wired links and home routers, and practical troubleshooting. Short modules and labs build real intuition for the networks you use daily. Made for absolute beginners and career starters in IT. Free to enroll at netacad.com through Cisco's global education program.
CS50's Understanding Technology (Harvard)
Harvard's free CS50 course for non-majors explaining what hardware, software, the internet, and multimedia actually are. Short lectures trace the input-process-output model through real apps and demystify files, memory, storage, and security without writing code. Built for absolute beginners who want the mental model behind their devices. All lectures and materials are free; the CS50 series has reached millions of learners worldwide.
DigitalLearn: Cloud Storage
DigitalLearn's cloud storage course explaining where files live beyond the device: how sync works, what saving to the cloud really does, and how to get photos and documents back on any screen. Short video lessons cover uploading, downloading, and organizing online storage safely. Built for adult learners and first-time cloud users by the Public Library Association. Free at digitallearn.org.
DigitalLearn: Getting Started on a Computer
DigitalLearn's entry course for first-time computer users: what the parts do, how to use a mouse and keyboard, and how to find and open programs. Video-based lessons with simple practice tasks are paced for adult learners with zero prior exposure. Built by the Public Library Association for library and community digital-skills programs. Free to take, with optional progress tracking.
DigitalLearn: Using a Mobile Device (Android)
DigitalLearn's Android mobile course covering touch gestures, installing and removing apps, Bluetooth pairing, battery and charging care, and freeing up storage when the phone fills up. Lessons are short video walkthroughs designed for first-time smartphone users and mobile-first learners. Built by the Public Library Association and used in library digital-inclusion programs. Free to take at digitallearn.org.
GCFGlobal Computer Basics
GCFGlobal's free Computer Basics tutorial covering the parts of a computer, how hardware differs from software, operating system basics, and the first hands-on steps with mouse, keyboard, and files. Short illustrated lessons with practice activities let absolute beginners learn at their own pace. Produced by GCFLearnFree, the nonprofit education arm of Goodwill, used by millions of learners. Entirely free with no account required.
Khan Academy — Digital Information (AP Computer Science Principles)
Khan Academy's free Digital Information unit from the AP Computer Science Principles course teaches how computers turn the world into data. Short videos and interactive exercises cover bits and binary, text and number representation, and how images and sound become bytes. Built for absolute beginners with no programming background, every concept is paired with practice questions and mastery tracking. Backed by a nonprofit used by tens of millions of learners worldwide.
Khan Academy: Computers and the Internet
Khan Academy's free unit on computers and the internet: IP addresses, DNS, packets, routing, and how information moves across networks and borders. Short videos with practice questions build understanding step by step at the learner's pace. Made for students, teachers, and self-learners with no prerequisites. Part of Khan Academy's nonprofit curriculum used by millions worldwide.
Microsoft Learn — Describe Cloud Concepts (Azure Fundamentals, AZ-900)
Microsoft's free self-paced training path Describe cloud concepts is the opening module of the AZ-900 Azure Fundamentals curriculum. Short lessons with knowledge checks cover what cloud computing is, shared responsibility, consumption-based subscription pricing, and what high availability and outages really mean. Written for absolute beginners and career switchers. Free forever on Microsoft Learn, with an optional paid certification exam.
Microsoft Learn: Exploring basic computer concepts
Microsoft Learn's free self-paced path covering what computers do, hardware versus software, operating systems, and how applications and files fit together. Short modules with knowledge checks suit absolute beginners building digital confidence on Windows, Mac, or mobile. Maintained by Microsoft as beginner onboarding for its training ecosystem. Free to follow with a Microsoft account or anonymously.
Nand to Tetris: Build a Modern Computer from First Principles
The Nand to Tetris course where you build a complete computer from basic logic gates up through a compiler and operating system, project by project. Nothing teaches layers of abstraction better than stacking them yourself, from NAND gates to running software. Suitable for motivated beginners through intermediate learners; the hardware half needs no programming background. Free at nand2tetris.org and taught at universities worldwide.
Stanford CS101: Introduction to Computing Principles
Stanford's free self-paced CS101 course covering how computers and the internet work: bits, hardware, software, networks, packets, routing, and the web, with automatic grading and no prerequisites. The internet modules trace real network behavior from addresses to packet delivery. Built for students and professionals who want Stanford-level fundamentals without enrolling. Free to audit online at web.stanford.edu.
OpenStax: Computer Levels of Abstraction (Intro to CS, 5.2)
Section 5.2 of OpenStax's Introduction to Computer Science textbook, covering the levels of abstraction that make technology learnable: how each layer hides the one below, from transistors to applications. Clear diagrams and review questions cement the single most important idea in computing. Written for college intro courses but readable by any self-learner. A free peer-reviewed textbook from OpenStax, used in thousands of courses.
Backblaze — The 3-2-1 Backup Strategy
Backblaze's guide to the 3-2-1 backup strategy explains the rule — three copies, two media types, one off-site — with concrete setups for home users and small teams. It draws the line between backup and sync, covers cloud and local options, and insists on testing a restore. Written for non-technical readers and updated as storage options change. Published by a backup company that maintains one of the largest public datasets on drive reliability.
Best Practices for API Key Safety
OpenAI's official guide to protecting API keys: environment variables, expiration dates, key rotation, IP allowlisting, usage monitoring, and exactly what to do the moment a key leaks. It walks the revoke drill step by step and shows how a leaked key turns into someone else's bill. Essential reading before putting any key in any tool or agent. From OpenAI's help center; the practices mirror every major API provider's.
Cloudflare Learning Center — What Is the Cloud?
Cloudflare's Learning Center lesson explains the rented-computer reality of cloud computing in plain language: servers in data centers, why latency and outages happen, and what public, private and hybrid clouds actually mean. Written for non-engineers, each concept links onward to short companion lessons. Maintained by one of the internet's core infrastructure companies and kept current. Free, no account, glossary-style depth.
Cloudflare Learning Center: How WebRTC Works
Cloudflare Learning Center's guide to WebRTC: how browsers and messaging apps carry live audio and video between devices, and why calls still need servers for signaling. Explains the technology behind everyday video calls in plain terms and why calls break when networks degrade. Aimed at beginners and curious users debugging call quality. Free educational content from Cloudflare's learning center.
Cloudflare Learning Center: What Is a Packet?
Cloudflare Learning Center's guide to packets: how data is chopped, labeled, routed, and reassembled, and why loss and congestion make calls break and video buffer. Explains headers and routing at a level a beginner can follow without jargon. Aimed at anyone troubleshooting slow connections or learning networking basics. Free educational material from Cloudflare's learning center.
Cloudflare Learning Center: What Is DNS?
Cloudflare Learning Center's guide to DNS: how domain names map to IP addresses through a distributed, caching phone book of nameservers. Explains lookup caching and lookalike-domain typosquatting risks along the way, since the naming layer is where scams hide. Aimed at beginners and junior technical staff alike. Free educational content from the company that serves a large share of global DNS traffic.
Diátaxis — A Framework for Documentation
The Diátaxis framework is the map for reading and writing documentation: it explains the four kinds of docs — tutorials, how-to guides, reference and explanation — and where truth lives in each. Learning to recognize which type you are reading makes any tool's docs navigable. Written for technical writers and developers, but its categories apply to any help site or manual. Free, open, and adopted across major documentation projects worldwide.
GCFGlobal: Exploring HTML on Live Webpages (Basic HTML)
GCFGlobal's Basic HTML lesson on exploring HTML on live webpages: using view-source and developer tools to see the structure behind any site. Hands-on steps demystify pages by revealing the markup that renders what you see. Made for total beginners with no coding experience required. Free from the GCFLearnFree nonprofit tutorial library.
GCFGlobal: Troubleshooting Basic Problems (Windows Basics)
GCFGlobal's tutorial on troubleshooting basic computer problems: the calm first-response sequence of restarting, checking power and cables, checking the network, and reading the actual error message. Worked examples cover frozen apps, missing files, and printer and connection issues. Made for beginners who panic when things break. Free from the GCFLearnFree nonprofit library.
GCFGlobal: Working with Files (Windows Basics)
GCFGlobal's Windows Basics tutorial on working with files and folders: creating, renaming, moving, copying, and finding documents and photos across a device. Step-by-step illustrated lessons with practice exercises turn file management into repeatable habits for beginners. Made for new Windows users and digital-skills classes. Free from the GCFLearnFree nonprofit library.
Get Cyber Safe — Storage and Backup (Government of Canada)
Get Cyber Safe, the Canadian government's public cyber-safety campaign, explains storage and backup for households: what to back up, where the copies should live, and how backups defeat ransomware. The advice is plain language with short checklists a non-technical person can act on the same day. Free, bilingual, and maintained as public education rather than product marketing. A trustworthy complement to vendor-published backup guides.
IPFYI: Internet Infrastructure Guide Series
IPFYI's Internet Infrastructure Guide series explaining the physical internet: data centers, routers, cables, and how packets of data actually travel between your device and a server. Written in clear prose with diagrams, going deeper than a typical explainer without requiring a networking background. Aimed at curious users, junior IT staff, and students. A free independent educational guide series at ipfyi.com.
Keep a Changelog
Keep a Changelog is the community guide to writing and reading changelogs: what to record, how to label Added, Changed, Fixed and Removed, and how deprecations should be announced to users. It teaches migration-as-normal-maintenance through examples drawn from real projects. Short, practical and free, published as a versioned standard with translations. Maintained openly on GitHub with broad adoption.
Library of Congress — Recommended Formats Statement
The Library of Congress Recommended Formats Statement is the authority on which file formats are likely to survive: it ranks preferred formats for documents, images, audio, video and datasets with technical rationale for each choice. Studying it teaches open-versus-proprietary judgment directly from the world's largest library. Updated annually by preservation specialists. Free public web edition and PDF.
Mozilla *Privacy Not Included (buyer's guide)
Mozilla Foundation's buyer's guide *Privacy Not Included teaches you to evaluate apps and connected products before adopting them, scoring each against concrete security and privacy criteria. Its minimum-security-standards checklist is a reusable rubric: update policy, encryption, data deletion, track record. Aimed at ordinary consumers making tool choices, with research-backed verdicts rather than marketing. Free and published by the nonprofit behind Firefox.
SQL for Data Analysis — SQL Tutorial (Mode / ThoughtSpot)
The free SQL tutorial originally built by Mode Analytics and now hosted by ThoughtSpot is the classic SQL for Data Analysis walkthrough. It teaches SELECT, filtering, joins, aggregation and subqueries in sequence, each lesson paired with a runnable query against a real sample database. Written for analysts and beginners who need to ask questions of tables fast. Dozens of lessons, entirely free, no account needed.
Unicode Consortium — Official Unicode FAQ
The Unicode Consortium's official FAQ is the reference source for how text encoding actually works. It answers the recurring questions plainly: what Unicode is, how UTF-8 and UTF-16 differ, why normalization matters, and where mojibake comes from. Written for implementers and curious readers alike, it links into the full technical standard whenever you want depth. Maintained by the nonprofit that defines the standard itself.
Unicode FAQ — Bengali (Bangla)
The Unicode Consortium's dedicated Bengali script FAQ covers the exact problems Bangla users hit: legacy fonts like SutonnyMJ versus Unicode text, conjunct consonants, matra rendering, and why old Bangla documents turn to gibberish. It explains how Bangla characters are encoded and combined in Unicode. Invaluable for anyone working with Bangla text or teaching Bangla digital literacy. Free, official, and maintained by the standards body.
What are webhooks? - webhooks.fyi
The webhook primer from webhooks.fyi, Svix's open knowledge site: how push-style notifications work, why a webhook beats polling, and how payment and message notifications actually arrive. It covers the anatomy of a webhook request — JSON payload, headers, HMAC signatures — plus delivery realities like retries and timeouts. Written for developers and technically curious users who want the reverse direction of APIs. Vendor-neutral, with a directory of provider practices.
Working with JSON - MDN
MDN's beginner guide to JSON: what key-value pairs, nesting and arrays look like, how to parse and stringify JSON, and how to read a real API response without getting lost. The wire format's lingua franca explained with live examples and small exercises. Aimed at learners meeting APIs for the first time. Part of MDN's free web development learning curriculum from Mozilla.
HTTP messages - MDN
MDN's reference page on HTTP request and response messages: the anatomy of request line, headers and body, and where each kind of information lives. It is the canonical explanation of the metadata-versus-payload split and how methods, status codes and headers fit together. The professional form of the request-response anatomy every API user needs. Maintained by Mozilla as part of MDN Web Docs, the definitive web platform reference.
HTTP response status codes - MDN
MDN's complete HTTP response status code reference: what 200, 401, 403, 404, 429 and the rest actually mean, organized by class with the semantics of each. The canonical studied page for reading failure as data — the signal, not the end of the road. Written for web developers and API users at every level. Maintained by Mozilla; the status-code definitions the whole industry links to.
Keep a Changelog — Version 2.0.0 Spec
The community standard that explains what a changelog is, why versions and updates look different, and how software projects record what changed between releases. Reading it demystifies why apps change after updates and what deprecation means for features you rely on. Written for developers but readable by anyone curious about software change. An open-source documentation standard at keepachangelog.com, free to read and reuse.
MDN Web Docs — HTTP Overview
MDN's HTTP overview is a worked example of reading documentation like a contract: resources, requests, methods, status codes and headers laid out with precise definitions and examples. Following its shape — what an endpoint is, what each method does, how authentication appears — is exactly the read-an-API-page skill. Maintained by Mozilla with a massive open contributor base. Free, authoritative and continuously updated.
MDN: Client-Server Overview
MDN's client-server overview explaining the split behind every online service: clients request, servers respond, and the same device can play both roles. Covers what a server really is and how chat apps, browsers, and games all fit the same model. Written for new developers but readable by any curious user. Part of Mozilla's free MDN Web Docs, the web's canonical reference maintained by a global community.
MDN: How the Web Works
MDN's How the Web Works guide separating the internet from the Web: browsers, hyperlinks, and HTML as rendered structure rather than truth. Explains how a page is requested, parsed, and painted, which makes view-source demystifying instead of scary. Written for absolute beginners starting web development. Free documentation from Mozilla's MDN Web Docs community.
MDN: Overview of HTTP
MDN's overview of HTTP, the request-and-response protocol behind every tap: how a client sends a request, what a server returns, and how status codes and headers carry meaning. Follows a typical HTTP session from first message to rendered page. Written for web development beginners but clear enough for general readers. Free documentation from Mozilla's MDN Web Docs community.
MDN: What Is a URL?
MDN's definitive guide to URL anatomy: scheme, host, path, query parameters, and fragment, dissected with real examples. Reading addresses like sentences becomes automatic after the worked breakdowns of multiple real URLs. Written for web development beginners and useful as a permanent reference. Free from Mozilla's MDN Web Docs community.
OpenRefine Documentation
OpenRefine's official documentation and user manual teach the craft of cleaning messy tabular data: splitting columns, reconciling inconsistent values, clustering near-duplicates, and exporting clean CSVs. The docs are built as tutorials on real datasets, so you practice while reading. Aimed at researchers, journalists and anyone drowning in inconsistent spreadsheets. OpenRefine itself is free and open source with an active community.
Semantic Versioning (semver.org)
Semantic Versioning is the specification that teaches version numbers as a language: what MAJOR.MINOR.PATCH promises users, and what a breaking change actually means. Reading it turns changelogs, upgrade notices and deprecation warnings into something legible. The spec is short, precise and free, maintained publicly on GitHub. Used across the open-source world as the de-facto versioning standard.
Digital Preservation Handbook (Digital Preservation Coalition)
The Digital Preservation Coalition's Digital Preservation Handbook is the field's standard long-form reference for keeping digital material readable across decades. It covers file formats, obsolescence, integrity checking, storage and succession planning with practical guidance drawn from real institutions. Written for archivists but essential for anyone deciding which formats will still open in ten years. Free to read online, continuously maintained by a global nonprofit.
Email Explained from First Principles
Email Explained from First Principles, a free online book that rebuilds email from the ground up: store-and-forward delivery, addresses as account-at-server, SMTP conversations, attachments as files, and forgeable headers that make spam structurally inevitable. Diagrams and worked examples cover the whole system without assuming prior knowledge. For curious learners and self-taught developers who want the deep version. Free to read at explained-from-first-principles.com.
High Performance Browser Networking: Primer on Latency and Bandwidth
The latency and bandwidth primer from High Performance Browser Networking, the free online O'Reilly book by Ilya Grigorik: what each measures, how they differ, and why a big pipe still feels slow to start. Includes the practical framing of what you actually buy in a mobile data pack. Written for developers but readable by technical-curious generalists. Free to read in full at hpbn.co.
Crash Course Computer Science (full series)
The full Crash Course Computer Science series traces computing from logic gates to operating systems in 40+ short episodes. Early episodes cover binary, representing numbers, letters, images and sound as data, and the abstraction layers of hardware and software. Made for curious beginners, each densely animated lesson runs under fifteen minutes. Produced with PBS Digital Studios, it is one of the most widely used CS introductions on YouTube.
How The Internet Works (video series)
A YouTube playlist of short animated videos on how the internet works: wires, cables and Wi-Fi, IP addresses and DNS, and packets, routing and reliability. Each episode turns the cloud into real cables, routers, and data centers in a few vivid minutes. Made for students and teachers but ideal for any beginner. Free on YouTube as a curated playlist used in classrooms worldwide.
APIs for Beginners - How to use an API (Full Course)
Craig Dennis's full-length APIs for Beginners course on the freeCodeCamp YouTube channel: what APIs do, why they exist, and hands-on use of real APIs (Spotify, Twilio) with Postman and curl. It walks from interface basics through REST constraints to a complete app wired to external APIs. A multi-hour structured video course assuming only basic coding familiarity. Published by freeCodeCamp, the nonprofit free-learning platform.
Compression: Crash Course Computer Science #21
A single Crash Course episode devoted to data compression: why files compress at all, run-length encoding, Huffman coding, and the real difference between lossy and lossless. It shows concretely why JPEG images degrade on re-save while ZIP archives never do. Aimed at beginners, the twelve-minute video builds intuition before touching any math. Part of the PBS-backed Crash Course Computer Science series watched by millions.
Computerphile: How DNS Works
Computerphile's video walking through a real DNS lookup step by step: resolvers, root and TLD servers, caching, and what happens when a name does not resolve. Watching one lookup traced live makes the distributed phone book concrete. Great for learners who understand better by seeing a worked example. Free from the University of Nottingham's Computerphile channel on YouTube.
Computerphile: Understanding File Formats and Magic Numbers
Computerphile's video on file formats and magic numbers, showing why renaming a .txt to .jpg breaks it and how programs read the first bytes to identify what a file really is. Real examples make the rule that the type lives in the bytes concrete in under fifteen minutes. For viewers who understand better by seeing the mechanism at work. Computerphile is the University of Nottingham's computer science channel, free on YouTube.
Crash Course Computer Science #18: Operating Systems
Crash Course Computer Science episode 18 on operating systems: the referee layer that manages programs, memory, and hardware, and the origin of permission pop-ups. Explains how the OS decides what apps may touch, how sandboxing contains them, and why updates must be installed. Aimed at beginners who want the why behind everyday device prompts. Part of the Crash Course CS series, free on YouTube.
Crash Course Computer Science #19: Memory and Storage
Crash Course Computer Science episode 19 on memory and storage: RAM versus hard drives and SSDs, why 'did it save?' has a precise answer, and what actually survives a crash. Fifteen minutes of animation walks the hierarchy from registers to cloud backup in plain language. Great for anyone confused by storage-full warnings and missing files. Part of the Crash Course CS series, free on YouTube.
Crash Course Computer Science #20: Files and File Systems
Crash Course Computer Science episode 20 on what files really are: named blocks of bytes with formats and file systems underneath. Fifteen minutes of animation shows how operating systems organize folders, why extensions matter, and where documents and photos physically live. Aimed at curious learners who want the correct mental model fast. Part of the 40-episode Crash Course CS series, free on YouTube.
Everything Is a Remix (Kirby Ferguson)
Kirby Ferguson's documentary series Everything Is a Remix is the canonical study of copying, transforming and combining — how creativity and technology are built out of copies. It shows where the original went, from music samples to software forks to screenshots, with dense and well-researched examples. The full series including the updated 2023 edition is free to watch on the official site. Widely taught in media, design and law classrooms.
How to Read API Documentation and Make a Working Request
An interactive lesson that turns any API documentation page into a working request: find the base URL, method, auth and parameters, then send real calls against a public practice API and read the status, headers and JSON back. Exercises include a deliberate 401 to see failure as data, and a checklist that generalizes across any provider's docs. Built for non-engineers and beginners learning to cold-read API documentation. Free, browser-based, no account needed.
httpbin.org - HTTP Request & Response Service
httpbin.org is a free public service that echoes back exactly what you send it — request line, headers, status code and all — so you can watch an HTTP exchange live. Send a GET, a POST with a JSON body, or force a 404 and a 429 and see failure arrive as data. The standard key-less practice surface for making a first real API call, then deliberately breaking it. Open source, used in API tutorials worldwide.
Boston University: Understanding Patches and Software Updates
Boston University's guide to patches and software updates: what they fix, why they matter, and how to handle update prompts without anxiety. Explains security patches, feature changes, and end-of-life software in plain language with practical do's and don'ts. Aimed at students, staff, and any everyday device user. Published by BU Information Services and Technology as free public guidance.
freeCodeCamp: What Happens When You Visit a Website?
freeCodeCamp's guided walkthrough of what happens when you visit a website: DNS lookup, request and response, packets on the wire, and rendering in the browser. One continuous narrative that ties the whole page-load story together end to end. Aimed at beginners who want to narrate a page load confidently. Free on freeCodeCamp's nonprofit news platform, read by millions of developers.
Google Cloud: What Is Cloud Storage and How Does It Work?
Google Cloud's explainer of what cloud storage is and what actually happens when a file is saved to the cloud: uploads, replication, sync, and download back to any device. Covers storage classes and the sync-versus-backup distinction in plain terms for non-engineers. Aimed at consumers and small businesses deciding how to store files. Free educational content from Google Cloud's learning library.
How to Read & Understand API Documentation
Stoplight's guide to reading and understanding API documentation as a non-expert: the standard sections of REST docs, how to explore one operation in depth, and when to move from reference to tutorial. Uses Airtable's real documentation as the worked example throughout. Aimed at beginners and technical product people who must read API docs without writing code. From Stoplight, an API design tooling company, as free educational content.
Joel on Software — The Absolute Minimum About Unicode and Character Sets
Joel Spolsky's classic essay explains character encodings from ASCII through Unicode and UTF-8, written for developers but readable by anyone technical. It walks through exactly why text turns into mojibake when bytes are interpreted with the wrong encoding. The single most recommended primer on the subject, cited in computing curricula for two decades. Free to read, with a plain-English glossary of the confusing terms along the way.
Tidy Data (Hadley Wickham, Journal of Statistical Software)
Hadley Wickham's paper Tidy Data is the definitive studied material for turning messy notes into clean tables. It defines the rules that make a dataset usable — one variable per column, one observation per row — and shows real before-and-after reshaping of problem datasets. Written for anyone who works with spreadsheets or CSVs, not only programmers. Freely available as a PDF and cited tens of thousands of times.
W3C — A Little History of the World Wide Web
Tim Berners-Lee's short history of the web, published by W3C, traces the arc behind the course's promise: interfaces and plugins like Flash die while open protocols like HTTP and HTML persist. It covers the browser era, the standards battles and why openness outlives products. A primary-source read from the web's own inventor. Free on w3.org alongside related W3C history material.
Wikipedia — Mojibake
Wikipedia's studied reference article on mojibake — the garbled text produced when data is decoded with the wrong character encoding. It catalogs the classic symptoms across scripts and platforms, with worked examples and the specific encoding mismatches behind each failure. Ideal as a study companion when breaking and re-fixing a corrupted Bangla string. Community-maintained, heavily referenced, and continuously updated.
Wikipedia: Internet in Bangladesh
Wikipedia's referenced overview of internet infrastructure in Bangladesh: submarine cable landings, ISPs, mobile-first usage patterns, data costs, outages, and speed tiers. Coverage of how the country actually connects is grounded in cited BTRC and industry sources for further reading. Useful as the factual map behind local examples in class. Free, editable, and continuously updated by contributors.
Cloudflare Learning Center: What Is Latency?
Cloudflare Learning Center's latency glossary entry defining latency, how it is measured, and how it differs from bandwidth and throughput. Short and precise, with links into deeper performance topics for when you need them. Perfect for settling why a connection feels slow even when a speed test looks fast. Free educational content from Cloudflare's learning center.
DQ Institute: DQ Framework (Global Standards)
The DQ Framework from the DQ Institute, a global standard mapping the competencies of digital intelligence: identity, use, security, safety, emotional intelligence, communication, literacy, and rights, alongside AI readiness. Use it as the map for what digital literacy includes and where AI literacy begins. Aimed at educators, policymakers, and learners charting a path. Aligned with the IEEE 3527 global standard for digital literacy.
Creative Commons Certificate Program
The Creative Commons Certificate program is the formal course on open licensing: how copyright works, what CC licenses actually permit, and how remix, screenshots and shared material are legally handled. It is a multi-week cohort course with readings, case studies and a credential on completion. Aimed at educators, librarians and anyone publishing shared content. Tuition-based, run by the nonprofit that maintains the CC license suite.
freeCodeCamp — Relational Databases Certification
freeCodeCamp's Relational Database certification teaches SQL, Bash and Git through in-browser projects running on real PostgreSQL and SQLite databases. Learners write SELECT...WHERE queries, joins and subqueries while building games and tools, then complete five certification projects. No local setup required — everything runs in preconfigured browser containers. Made for absolute beginners and one of freeCodeCamp's nine free verified certifications.
