Your profile can be a confusing place if you don't know how to use it. Here's a helpful guide;
Getting there
Click the "UCP" at the top of forum. I have no idea what UCP stands for, I just know that it leads to the profile.
Iceclover's note: UCP stands for User Control Panel.
Editing your preferences
To edit, click and type. Make sure to save it!
Friends
Having friends is a helpful way to keep up with your favorite forum members. You can accept and manage new friends here.
Signature and avatar
Your signature and avatar are the things on the side (avatar) and bottom (signature) of your posts. Check other tutorials on how to edit those!
Character sheet
This is for your site roleplay. Edit it however you want, then join a clan and check the RP boards to edit accordingly.
Topics being watched and favorites
This is an easy way to keep up with topics that you check a lot. I don't know anybody who uses it, though, so don't stress over it.