If you haven't read the Getting Started with Development guide, that is a great place to start to get a quick overview of the Elgg framework. Below you will find links to all of the core functionality provided by Elgg.

Core topics

• The Elgg data model
  • Entities
  • Metadata
  • Annotations
  • Relationships
  • Access controls
  • Database schema
• Events system

Communicating with the user

• The views system
• Actions
• Languages and internationalisation
• Notifications
• Adding items to the river
• System messages

User handling

• Authentication
• Page ownership
• Building for groups

Advanced topics

• The REST API
• Gatekeeper functions
• Import and Export