The course

Twenty-four short lessons. Every program is a recipe: Shape, Memory, Movement.

MODULE 0 — THE THREE THINGS

Every app is three things at once (what it holds, what it remembers, how things move through it) and two verbs, read and write. You start with no code at all.

MODULE 1 — MATTER: THE SHAPE OF INFORMATION

Text, numbers, lists, objects, sets, nesting and functions: the shapes data takes, and how to pick the right one for a real problem.

MODULE 2 — PERSISTENCE: THE MEMORY OF THE SYSTEM

Where data is kept: in a variable, in a cache, in a file or a database, and how to trade speed, durability and space against each other.

MODULE 3 — MOTION: THE MOVEMENT OF INFORMATION

How data travels: input and output, control flow, bandwidth and latency, many things at once, and one saved note's whole journey to your screen.

MODULE 4 — THE DANCE: THE THREE TOGETHER

Shape, Memory and Movement working at once: a tiny note-taker end to end, one tap traced through all three, and an app you use every day read through the lenses.