Launch! is small (just 1 floppy disk) but huge in features.
Everything is documented here in the wiki, dive in there's plenty to explore!

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• Installation
• UI Conventions
• The Launch! Menu
  • Quick Launch
  • Menu Management
  • Explore & Run
  • File Open
  • SysBar
  • Shutdown
• Configuration
  • Fonts
  • Screen Savers
• Windows 3.x Integration
  • Menu Manager
• Tiny Menu
• Accessories
• Games
• Tooling
• Technical Information
• Help System
• Troubleshooting