I'd take a walk to your local bookstore and look through some of the sample tests for a bit. I'm sure the math won't be a problem for you, but the verbal part can be tricky if you've never seen how they word the questions.

Oh. And if you're taking it at one of their testing centers, bring as little extraneous matter with you as possible. They're just going to take it all away anyways, haha. I'm pretty sure you get patted down on the way in.

Partscaster/Tele into a bunch of pedals, a Maz 18 head, and a Z Best cab.