Documentation for Users
- The official QCAD Book: 
 QCAD - An Introduction to Computer-Aided Design
  
- User Reference Manual
 Translations: English, German
 Automatic translations: Danish, Dutch, French, Spanish, Italian, Portuguese, Polish
 Partial translations: Japanese, Russian
- Tutorials
- Installation Instructions
- Installation instructions for Ubuntu (very verbose)
- Frequently Asked Questions (FAQ)
- Changelog
- Features
- Supported Platforms
- List of all Keyboard Shortcuts:
QCAD/CAM
Developers
- The QCAD Scripting Interface
 An introduction to QCAD scripting.
- QCAD Application Framework API Documentation
- Qt API modules overview 
 Most of these modules and classes are fully available to scripts.
- Compiling QCAD from Sources
Command Line Tools
- QCAD Command Line Tools (dwg2bmp, dwg2svg, dwg2pdf)
Community
- QCAD User and Developer Discussion Forum
- Various tips and tutorials from QCAD users, posted to the forum
