How I use Claude Code (Meta L7 Senior Staff Engineer Tips)

This is my 50 Claude Code tips from 6 months of daily use personally and at Meta as a Staff Software Engineer. I've been coding with Claude Code basically 12 hours a day really trying to understand what makes Claude Code tik. Here's everything I wish I knew when I started, from foundations to advanced parallel workflows. ⏱️ TIMESTAMPS 0:00 - Intro 1:04 - ACT 1: Foundations (Tips 1-25) 1:18 - Tip 1: Run from root directory 1:56 - Tip 2: Run /init immediately 2:54 - Tip 3: CLAUDE.md is hierarchical 3:27 - Tip 4: Keep CLAUDE.md concise 3:58 - Tip 5: Structure: What, Domain, Validation 5:36 - Keyboard Shortcuts 5:58 - Tip 6: Shift+Tab toggles modes 6:40 - Tip 7: Escape interrupts 7:43 - Tip 8: Double Escape clears input 7:59 - Tip 9: Double Escape on empty = rewind 8:29 - Tip 10: Screenshot and drag 8:44 - Tip 11: Add context to screenshots 9:09 - Essential Commands 9:41 - Tip 12: /clear resets context 10:13 - Tip 13: /context shows token usage 11:42 - Tip 14: Let auto-compaction work 12: