How professional developers use Cursor's AI-first editor to write, refactor, and ship code dramatically faster without losing control of the codebase. 13 chapters covering setup, tab completion, chat & composer, multi-file editing with Agent Mode, .cursorrules & project context, @-mentions, custom AI rules & personas, frontend/backend/full-stack workflows, debugging with AI, Cursor vs Copilot vs Claude Code, advanced tips, and team workflows.