Here is a growing list of Moodle Key Concepts and where to find information on them.

• Blocks
  • http://docs.moodle.org/en/Teacher_documentation#Blocks

• Capabilities
  • http://docs.moodle.org/en/Category:Capabilities
  • http://docs.moodle.org/en/How_permissions_are_calculated

• Context
  • http://moodle.org/help.php?file=contexts.html

• Groups
  • http://docs.moodle.org/en/Groups

• Metacourses
  • http://docs.moodle.org/en/Metacourses

• Moodle Network
  • http://docs.moodle.org/en/Development:Moodle_Network

• Roles
  • http://moodle.org/help.php?module=moodle&file=roles.html
  • http://docs.moodle.org/en/Roles – note the table of contents to the right.
  • http://docs.moodle.org/en/Development:Roles

• Forms Library
  • http://docs.moodle.org/en/Development:lib/formslib.php
  • http://docs.moodle.org/en/Development:lib/formslib.php_Usage
  • http://docs.moodle.org/en/Development:lib/formslib.php_Form_Definition
  • http://docs.moodle.org/en/Development:lib/formslib.php_Validation