- Learn X in Y minutes
- Topcoder Competitive Programming track
- Leetcode
- Python Tutor helps you do programming homework assignments in Python, Java, C, C++, and JavaScript. It contains a step-by-step visual debugger and AI tutor to help you understand and debug code.
Fun
- before you code, learn how computers work - take-home messages: learn C, an ASM variant, do RE challenges on crackmes.one, get a board like an STM32 Nucleo