Tutorials you can run

Long, interactive explanations of how machine learning actually works. Nothing is hidden behind a library, every number is visible, and all of it runs in your browser — including the Python.

Each one is a single subject taken slowly, in parts. Read them in order or land in the middle; every part says what it needs on its own.

10 parts Neural networks, explained by building one Invent an alphabet that has never existed, draw it by hand, and train a neural network to read your handwriting — in your browser, with every number visible at every step.

What these are

Every tutorial here is built the same way: you make something real in the first few minutes, and every term is demonstrated before it is named. There is no video, no sign-up, and nothing to install.

They are free, and they stay free. If something here teaches you the wrong thing, that is a bug — report it.