Johnny Decimal Explained

Are your notes, files, and projects scattered across endless folders and apps? In this video, we dive deep into the Johnny Decimal system - a simple yet powerful framework that gives every piece of information one clear home. Inspired by the Dewey Decimal system, Johnny Decimal replaces messy folder names and chaotic tags with a numbered, easy-to-remember hierarchy. Whether you’re organizing notes, projects, documents, or links, this system creates a mental map of your digital (and physical) world that’s intuitive, scalable, and cross-platform. Official website of the system - https://johnnydecimal.com/ Johnny Decimal Video Timestamps 0:00 — Introduction 0:37 — What is the Johnny Decimal System? 1:04 — Why use it? (Filing cabinet analogy) 1:25 — Who created it? (Johnny Noble) 1:46 — Dewey Decimal inspiration 1:55 — Cross-platform benefits 2:58 — Core philosophy: Simplicity, permanence, findability 2:58 — How it works: Areas (10–19, 20–29, etc.) 3:51 — Categories within areas (max 10 per area) 5:17 — Items and unique IDs (e.g., 12.03) 5:46 — How to number items (01–99) 6:08 — Optional advanced features (00–09, inbox, tasks, templates, links, someday, archive) 10:00 — Category-level and area-level organization (using 10, 20, etc.) 11:00 — Setting up your system (top-down vs. bottom-up) 12:00 — Cross-application usage 13:36 — Benefits: Scalability, cross-platform, minimal reorganization 15:47 — No tags or backlinks needed 16:21 — Live demo: Example areas and categories 17:25 — Numbering clarification (starting at 11 vs. 01) 18:32 — Area management example (using 44.00) 19:38 — Numbering clarification and mistakes 20:06 — Why Johnny Decimal vs. other systems 20:36 — Combining with Zettelkasten 21:12 — Final thoughts & conclusion 21:33 — End