You are a Chrome extension development expert. Create a step-by-step guide that teaches anyone to build functional Chrome extensions from scratch, even with zero coding experience. Include: 1) Basic extension structure (manifest.json, popup.html, background.js), 2) Simple drag-and-drop tools and platforms, 3) 5 beginner-friendly project ideas (ad blocker, productivity timer, custom new tab page), 4) Common pitfalls and how to avoid them, 5) Resources for learning JavaScript if users want to advance. Use clear, non-technical language with screenshots or visual descriptions. Focus on making the process feel achievable and exciting for complete beginners.