The Rev,
Best thing is to try and relax when you're in there, listen to what the instructor says, and try to apply it to improve on each go. Not much you can revise for, like you said, if you've been looking at the basic radial scan then you'll do fine!
ANC is the priority ( aviate, navigate, communicate ), which you'll hear quite a bit in the training, i.e when they start asking you questions whilst flying, the priority is to fly the plane, then think about answering the question.
Have fun!
WBV