Mac+OS+X+Server

=OS X Mountain Lion Server=

Mountain Lion Server Online Help
https://help.apple.com/advancedserveradmin/mac/10.8/

A guide to using Mountain Lion Server
http://krypted.com/mac-os-x-server/a-guide-to-using-mac-os-x-server-10-8/

=OS X Lion Server=

Lion Server Online Help
https://help.apple.com/advancedserveradmin/mac/10.7/

Lion Profile Manager Online Help
http://help.apple.com/profilemanager/mac/10.7/