well, what exactly do you mean. there are many things you should know, and many things you may want to know.
1)Listen to the staff (or feel the wrath of the ban hammer... no, were nice though)
2)Don't spam!
3)Be nice
4)Talk to people as if they were your best friend
5)NO FLAME WARS
6) Treat people how you want to be treated
7)So you don't get scared, the ban hammer is not used often.