Basic Configuration
Basic configuration for Group module - create group type, groups, roles, relate entities
Limiting Views access by group permission
Configure a view to only show when the user has a specific group permission
The permission layers explained
How and where you should assign permissions to people when using Group
Turning off caching when it doesn't make sense
In some cases it is better to simply turn off group caching. Read on for the how and why.
Extending Group v1's access control model
How to tie into Group's access control handlers and change content visibility.
Updating your modules to Group 2.0 API
Instructions how to prepare and update your module to Group 2.0 API
Community contributions
Links with a brief description to contrib modules which extend Group