I don't know where to start or how to do anything here..any help would be appreciated...thanks

Welcome to the forum.

If you're wanting a really cool signature then I suggest that you head over to the Creative section of the forum where you can request one. The girls over there are amazing at making pretty things for signatures.

Basically, just start posting on the boards - it's great, you can keep upto date with all the latest DC news. If you need any help, just let me know and I'll be happy to help you.