• FAQ : Frequently Asked Questions
• Changes in 4.0 : What changed in Processing 4.0 from 3.x
• 4.3.1 Release Candidate : Announcing Processing 4.3.1
• Changes in 4.4 : What changed in Processing 4.4 (Gradle build)
• Legacy Installation Instructions (pre 4.4) : installing older versions of Processing
• Troubleshooting : Have a problem? Start here.
• Supported Platforms
• Preferences : A (very) partial list of some things that can be configured
• Themes : Processing 4 has a new set of colors and overall design
• Exporting Applications : Application export and present mode
• Exorcising AWT : Disconnecting Java AWT (Abstract Window Toolkit)

• Libraries – Overview, Basics, and Guidelines
• Tools - Overview, Basics, and Guidelines
• Modes – Overview
• Examples – Overview

The Overview pages cover what a Library/Mode/Tool is, the Basics pages describe how to build one, and the Guidelines pages cover how to package and distribute your creations.