Russell,
I can highly recommend the "PPL Confuser" by a guy with a Mr (or Mrs. Sornyung) - make sure it is the JAA edition. It is normally available from any of those catalogues that keep falling out of Pilot, Flyer etc.
It really is the d??? b?ll???s!
However, you really need to read all the Trevor Thom books - after all it is about learning to fly and not just about learning to pass exams!
PFO