NOTE: There's no section for forum guides so this may not be the right place?
Okay, so basically an avatar is the picture next to your name on the forums.
Click on Avatar.
If you have a picture on your computer that you want to use then click on Browse.
Pick your picture
If you want to use a url then….
Lastly, don’t forget to save
If there's anything wrong with it please leave me a comment and I'll fix it.