Learn computer science from the world's best universities.

Algorithms & Data Structures

MIT 6.006, MIT 6.046, Princeton — from sorting to P vs NP.

AI & Machine Learning

Stanford CS229, CS231n, MIT 6.034, fast.ai — from linear regression to deep learning.

Operating Systems

MIT 6.828, Berkeley CS162, OSTEP — processes, memory, file systems.

Security & Cryptography

MIT 6.858, Stanford CS155, Stanford Crypto — attack models and defenses.

Networking