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Every guide here turns a topic into a plan you actually work through: each chapter has one outcome, a starting action under twelve minutes, the minimum you need to know, a worked example, a checklist and exercises. Read the whole thing on the page, or take the printable PDF with you.

How every guide is built

1. One outcome per chapter

Every chapter names what you'll be able to do at the end of it — in the form of a sentence starting "I can", so you can tell whether you're there yet.

2. A start you can't put off

Each chapter opens with a concrete action that takes under twelve minutes, because the hardest part of learning anything alone is beginning.

3. Proof instead of quizzes

A checklist and two or three exercises end each chapter. Doing them is the evidence you learned it — no tests, no re-reading.

Free guides across every level

From everyday practical skills to university-level topics — all free, all self-paced, each with a printable PDF.

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