See these pages for information that applies for all modules:

• Module — Overall introduction and overview
• Module Admin — Introduction to the module admin pages for site-wide and individual module settings
  • Assigning Modules — How to select a module to configure it
  • Module Settings Interface — Interface for configuring individual module settings
  • Module Settings Parameters — Explanation of standard parameter settings for modules
  • Creating Custom Modules — How to create user modules
• Index of Modules — Links to the documentation of individual modules
• User Modules — How (if the feature is active) users can choose and place their modules
• Mods Type Modules — Links to modules that are installed as components