Education
CS50 is Harvard University's introduction to computer science, consistently ranked as one of the best educational experiences available online. It starts with C to teach memory management and low-level concepts, then moves through Python, SQL, web development with HTML/CSS/JavaScript, and finishes with a final project. The course is famous for its production quality, David Malan's energy, and its rigor — it genuinely teaches you to think like a computer scientist. All materials are free via edX; only the certificate costs money.