Mailing Lists:
CRM-dev
http://lists.civicrm.org/lists/info/civicrm-dev
Developer mailing list for CiviCRM. This is currently the MAIN mailing list for CiviCRM
 

 

 
User Groups:
CiviCRM Community page
http://civicrm.org/participate/
 

 

 
Discussion Boards:
CiviCRM Forums
http://forum.civicrm.org/
 

 

 
Chat Rooms:
#civicrm
IRC on chat.freenode.net