No problem!!
If you want to do something cool for your signature, you need to go into User Control panel on your top left hand side of the page and click on edit signature.
In there, you can add a glittery name, a meez, a tracker or anything you want really - so long as it's not too big for your first few posts.
To get to the sites to create that stuff, then copy and paste it into your sig, just look at someone else's posts and click on the link.
It sounds harder than it is, luv - have fun and a little play and see what you can come up with!
xxxxx