Learning & Education

Free world-class education in maths, science, economics and more — non-profit funded.

Non-profit offering thousands of hours of free coding curriculum and certifications.

Free MIT course materials covering most of the curriculum — lectures, notes, exams.

University-led courses; audit most for free, pay only if you want a certificate.

MOOC platform founded by Harvard and MIT. Free to audit; certificates are paid.

Free Stanford lectures and materials, including the famous CS229 machine learning course.

Free Harvard courses including CS50 — one of the best introductions to computer science.

Harvard's free intro to computer science — full lectures, problem sets and community support.

Free, open source full-stack web development curriculum maintained by the community.

Interactive coding lessons in the browser. The free plan covers basic courses across many languages.

Free coding practice with mentor feedback across 70+ languages — non-profit.

Coding interview practice platform. Free tier includes hundreds of problems.

Free coding challenges and certifications across many domains.

Community-driven coding kata for sharpening skills in dozens of languages — free.

Long-running collection of free maths and programming challenges.

Interactive maths, science and computer science courses. Limited free content; subscription unlocks the rest.

Free, gamified language learning across 40+ languages. Ad-supported with optional subscription.

Language learning via spaced-repetition and native-speaker video clips. Free tier with paid upgrade.

Free, open source spaced repetition flashcards for any topic — Android, desktop and web. iOS paid.

Flashcards and study modes generated from your own decks or shared sets. Free tier with ads.

Free recordings of selected Yale undergraduate lectures across the humanities and sciences.

The Open University's free learning hub — hundreds of short courses and badged programmes.

Social learning platform with university courses; many are free to audit during their run.

Non-profit offering free college-level courses with optional low-cost credit-eligible exams.

Open Educational Resources library — free textbooks, lesson plans and courseware.

Free, peer-reviewed, openly licensed textbooks from Rice University covering most introductory subjects.

Free visual maths education on YouTube — among the best explanations of linear algebra, calculus and neural nets.

Effectively the world's biggest free university — channels for every subject from physics to plumbing.

Short animated lessons across virtually every subject, free under TED's educational mission.

Free educational YouTube series covering high-school and intro-college subjects.

Mobile-first interactive coding lessons; free tier supports most courses.

Community-maintained free learning roadmaps for developer roles and technologies.