From notation to working code: the linear algebra, calculus, and learning algorithms behind neural networks, with every formula implemented in Python (NumPy) and C++ (Eigen). Started from "Hands-On Mathematics for Deep Learning".

Forty-five classic coding-interview problems — the ones that keep showing up — solved in Python or C++ against a test suite you run in the browser. Fifteen Easy, fifteen Medium, fifteen Hard, so you can warm up, stretch, and then grind.