MDN Web Docs
Understand HTML, CSS, and the browser features behind the pages you browse. Start with the learning curriculum, then follow a specific question.
Visit MDN Web DocsCURATED STARTING POINTS
The web is still full of good places.
A small, purposeful collection of learning resources, archives, and reference sites. Pick a direction, then follow a question.
Curated websites and learning resources
W3C Web Accessibility Initiative
Use practical introductions and guidance to think about how people with different needs navigate, read, and operate the web.
Visit W3C Web Accessibility Initiativeweb.dev Learn
Structured learning material on responsive design, CSS, accessibility, performance, and other foundations of a usable website.
Visit web.dev LearnChrome DevTools
Explore the browser’s tools for inspecting elements, studying layouts, and investigating how a page behaves.
Visit Chrome DevToolsInternet Archive
Explore preserved web pages and digital collections. Treat each capture as a dated record, with possible gaps in what was saved.
Visit Internet ArchiveProject Gutenberg
Find digitized books to read in browser-friendly formats. Check the rights information for your location before reusing a text.
Visit Project GutenbergNASA Science
Discover mission explainers, images, and topic collections directly from NASA. Keep the page date and mission context with your notes.
Visit NASA ScienceMozilla Support
Look up Firefox features and troubleshooting steps. Read the platform notes so the instructions match the device you are using.
Visit Mozilla SupportKeep the source with the discovery.
Save the exact page, its publication or update date when shown, and a note about the question it answers. A useful collection is one you can explain and return to.
Read the web research guide