Relax, Have Fun, and Be Nice. Treat others as you would like to be treated. And chill. It's just the internet.
Some More Specific Guidelines:
No Spam
1.1 Posting content for no relevant reason
1.2 Posting twice in a row without a good reason
No Flaming
2.1 Anything that insults or offends another member, including trolling
2.2 Steer clear of racial, political, or religious …