HTML
The markup language that defines the structure of every web page.
Build complete websites and web apps, from the page in the browser to the server behind it.
Web developers build and maintain the sites and web apps people use every day. Full-stack developers work on both halves: the front end that runs in the browser (HTML, CSS, JavaScript and frameworks like React) and the back end that stores data and answers requests. It's one of the most accessible ways into tech — a portfolio of real, deployed projects often counts for more than a degree.
Take these courses in order, from beginner to mid-level.
The shared base every STEM career uses: working with numbers and units, testing ideas fairly, handling data and code, and explaining your work.
The everyday computer, internet, safety and AI skills every tech and STEM job assumes you already have.
Learn how the web works and build, style and publish your own responsive website with semantic HTML and modern CSS.
The programming language of the web: variables, functions, the DOM, arrays and objects, and fetching data from APIs.
Write clear emails and documents, present and run meetings, work well on teams, and navigate résumés, interviews and networking.
The practical math behind tech and STEM work: numbers, algebra, functions, geometry, logic and counting, with short code exercises.
Use the terminal with confidence, track your work with Git, and collaborate on GitHub with pull requests.
Query, summarise, join and change data in a relational database with SQL, practised in your browser.
Understand tech roles and career ladders, pick a realistic learning route, build portfolio evidence, and navigate postings, interviews and your first 90 days.
Build interactive interfaces with React components, props, state, effects, context, routing and component tests.
Build interfaces that work for everyone on every screen: WCAG 2.2, keyboard and ARIA, fluid layouts, responsive images and real audits.
Design REST routes, validate JSON, build Node and Express APIs on a SQL database, secure them, test them and ship them.
Go from building components to shipping production front-ends: architecture, TypeScript, state, performance, testing, CI and code review.
The markup language that defines the structure of every web page.
The styling language that controls how web pages look — colors, layout, animations.
The programming language of the web. Runs in browsers and on servers (via Node.js).
JavaScript with types. Catches bugs before you run the code.
The most popular library for building interactive user interfaces with components.
A JavaScript runtime for building servers, APIs, and tools outside the browser.
The language for asking questions of relational databases. Used everywhere.
The version-control tool every software team uses to track and merge changes.
Hand-picked courses and reading from trusted free providers.
Free open-source curriculum for full-stack web development. Project-heavy, community-supported.
Mozilla's reference-quality guides to HTML, CSS, JavaScript, and accessibility.
300-hour free certification covering HTML, CSS, accessibility, and building real projects.
The official React guide: components, props, state, and hooks, with interactive examples.
The free official Git book: first commits, branching, remotes, and how Git works under the hood.
Build apps for the phones in everyone's pockets.
Build the buttons, screens, and animations users actually touch.
Build the servers, APIs, and databases that power apps behind the scenes.