To join you must:
1. go to channel [nls] in bnet. if no one is there, come back later. if someone is, ask them to join.
2. Send an e-mail to email@example.com stating your bnet name, favorite starcraft race, and if you have a bot, its name.
3. Try to play games with clan members as much as possible.
4. Follow the rules outlined in the page: rules.