Welcome to the forums!
Here are just a few things you should keep in mind:
-Don't believe lycan when he says I'm a hacker.
-Don't go to the off-topic section very much because there are lots of inappropriate stuff lurking there.
-Don't beg, spam, scam, or ask to be unbanned or something. It's really annoying.
-Don't post just anything. Make sure that when you post, it's worth looking at.
-Don't make your sig too distracting like those damned frogs.
-Don't act inappropriately or say inappropriate things.
-Avoid starting arguments or picking fights.
Well, that's all for now and again, welcome to the forums!