Learn
How the apps you use every day really work, and the building blocks behind them.
- Start hereEveryday apps, explained
The apps you use every day, from booking a cab to UPI, explained in plain words.
62 lessons · about 16.5 h
- For AI buildersBuilding with AI
How apps built on AI models work: tokens and cost, answers from your own data, image and voice generation, and agents you can trust.
119 lessons · 8 challenges · about 35.5 h
- Levels 0 to 6System design, level by level
From your first server to interview-ready: seven levels of lessons, plus challenges to build what you learn.
51 lessons · 19 challenges · about 16 h