See it move. Derive it. Then write it.
Two tracks: how models learn, from a straight line to a language model, and how to build production-grade agents on top of them. Every lesson has a short film, the ideas worked out step by step, a guided coding lab and exercises, and every part ends with a project.
The Line That Learned
Twenty-four points, one bad guess, and sixty small steps downhill. Errors become squares, loss becomes a valley, and gradient descent finds the bottom. Turn the sound on: the music comes into tune as the line fits.
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Intuition first
Short animated films show what the math is doing before you read a single symbol. Scrub, pause and replay any moment.
Every step derived
No "it can be shown that". Each lesson derives the loss, the gradient and the update rule, with the notation explained.
Write it yourself
A guided lab builds each idea from scratch in your browser, one tested step at a time. Exercises follow, and each part ends with a bigger project.