Renamed the osu! Codex: every in-text link now points to /codex (old /bible links redirect). No wording or evidence changes.

• Changed: How to Use This Book · Ch. 1 The Big Picture · Ch. 3 Where the Coaches Agree and Disagree · Ch. 4 Your First Hundred Hours · Ch. 5 Foundations · Ch. 6 Control Skills and Consistency · Ch. 7 Rhythm, Accuracy, and Offset · Ch. 8 Reading · Ch. 9 Sightreading · Ch. 10 Aim · Ch. 11 Reading Patterns by Name · Ch. 12 Streaming · Ch. 13 Stamina and Speed · Ch. 14 Nerves and Pressure · Ch. 15 Mods · Ch. 16 Tablet Technique: Grip, Area, Hover or Drag · Ch. 17 Hardware and Accessories · Ch. 18 Drivers, Firmware, and Polling · Ch. 19 Audio, Display, and Skin · Ch. 20 Hands, Eyes, and Health · Ch. 21 Playing on lazer · Ch. 22 "Play More," Decoded · Ch. 23 Plateaus, Confidence, and Goals · Ch. 24 Rank, pp, and Comparison · Ch. 25 Advice From the Top · Ch. 26 Busy Lives and Comebacks · Ch. 27 Diagnose Before You Drill · Ch. 28 Measure, Drill, Retest · Ch. 29 Watch Your Own Replay · Ch. 30 Build a Session · Ch. 31 The Programs · Ch. 32 The Jump-Map Trap · Ch. 33 Weekly Templates and Tracking · Ch. 34 Playing in Tournaments · Ch. 35 Reference Tables · Ch. 36 Glossary · Ch. 37 Resources · Ch. 38 Quick Answers · Ch. 39 About This Edition

September 2026 edition, as published and imported into osu! ascent (baseline).

Starting point: 42 chapters. Later releases list their changes against it.