Where the hell do I start!!!

You should start by writting a first entry in your blog. So people can pass by and say hello.

After, go see the photosets. And leave comments.

If you still want to do something, look on the boards or find some groups with your interests, and communicate. But if you don't have something intelligent to say, don't say anything.

You should start by looking at my pictures and telling me how hot I am and subsequently buy me everything I ask for off of my wishlist.

...

No?

Okay, then, yeah, I agree with Ges in that you should make a journal (er, blog) entry, and join some groups. Post in response to journals (er, blogs). Don't be an asshat. You'll make friends in no time. Also, use the correct board for the correct post.

Might I also suggest checking out the newbies group? You're already a member and you get to be in there for the first 60 days of your membership. It contains invaluable information.

Good luck!