The network has three active service entities:
General help info can be requested by messaging 'help' to any of them.
Terminology: words in <> are mandatory arguments. Ones in  are optional. Both should be typed in without the brackets.
/msg nickserv register <password> [email]
/msg nickserv identify <password>
/msg chanserv register <channel> [description]
That will register the channel to your previously registered nick. You cannot register channels without being registered and identified with NickServ.