A few mechanics questions

How do I edit my signature?
How do I change the skin on here?
How do I edit my avatar.

The mechanics on ProBoards are horrendous.

Go to ‘Profile’ in the header, then to ‘Modify Profile’. All the settings are there;
Avatar URL:
Select Skin:

The mechanics are actually quite good if you know what your doing.

You have to know the BB code you want to use to edit your sig.