21 Category · Learn Online
Free and freemium sites for actually learning something.
The directory · 17 entries
Grant Sanderson's mathematics channel. Visual explanations of linear algebra, calculus, neural networks. The animations alone made him the genre's most-imitated educator.
Interactive coding lessons. Type code in the browser, get immediate feedback. Free tier covers Python, JavaScript, HTML/CSS, SQL, plus the basics of most major languages.
7,000+ courses from Stanford, Yale, IBM, Google. Free audit on most — you get all the content; only the certificate costs money. Honest freemium.
Hank and John Green's educational YouTube channel. 10-15 minute episodes on world history, biology, economics, philosophy, and most major academic subjects. Fast-paced; well-written.
Harvard's intro to computer science, taught by David J. Malan. Free on edX. Widely considered one of the best programming courses ever recorded.
Language learning, gamified. Free with ads; paid removes them but the free experience is unrestricted. The streak mechanic is genuinely effective at maintaining habit.
Fully free coding bootcamp. 3,000+ hours of curriculum, project-based, leads to verifiable certifications at no cost.
The canonical free education site. K-12 math/science/humanities + university-level CS, economics, art history. Salman Khan's nonprofit. No signup needed for videos.
Virtually every course MIT teaches, with full lecture notes, assignments, and exams. Free, no signup. 2,500+ courses since 2001.
Animated educational videos averaging 5 minutes each. Genuinely the best 5-minute lesson format on the internet. Each comes with a "dig deeper" section.
Discover exceptional web design, then decode exactly how it is built — curated site breakdowns, colour palettes, templates and tools for anyone who wants to make better-looking pages. Free, no signup.
Founded by MIT and Harvard in 2012. Similar to Coursera but leans MIT/Harvard/Berkeley. Free auditing on most courses; certificate is paid.
An interactive AI knowledge base — dozens of hands-on tools, explainers and learning paths that teach you how AI actually works and how to build with it, all running in your browser. No signup, nothing collected.
Math YouTube channel, 8-15 minute episodes. Brady Haran interviews mathematicians about specific problems. You don't need a math background to enjoy it.
Stanford's free course library, including the legendary "Machine Learning" course that became Coursera's first major hit. Smaller selection than MIT, consistently high quality.
Bite-sized 5-minute courses delivered daily by email. Pick a 10-day course on something (Greek mythology, sleep science) and one short lesson lands each morning.
Aggregator for free university lectures across most academic disciplines. Yale, Stanford, Princeton lecture archives in one place.