How to use this course¶

Read this page first. It is short, and it will save you weeks.

Type every example¶

The single strongest predictor of whether someone finishes a course like this is whether they type the code or read it. Reading produces recognition; typing produces recall. When you hit a code block, retype it — including the parts you think you already understand. Then break it deliberately and read the error.

Follow the prerequisites¶

The volumes are ordered. Volume 5 assumes Volume 2. Volume 9 assumes Volume 8. You can skip, but if a lesson stops making sense, the cause is almost always a skipped prerequisite rather than the lesson being badly written.

Use the three-pass method on hard lessons¶

1. Skim — read the headings, the diagrams and the key-takeaway box. Five minutes.
2. Work — read properly, typing every example. This is the real pass.
3. Teach — close the page and explain the idea out loud, as if to a colleague. Where you stumble is exactly what you have not learned yet.

Do the exercises before the solutions¶

Every exercise has a hidden solution. Opening it before you have genuinely attempted the problem feels efficient and is not: you get the satisfaction of understanding without the retrieval practice that makes it stick.

Build something at every phase¶

The roadmap says what to build at the end of each phase. Do it. A portfolio of four working projects beats a certificate every time, and it is what an interviewer will actually ask about.

Conventions used in this course¶