Read the book through once, then go through the confuser (make sure it's up to date edition), then go through the confuser again, and again, after three passes, take the exam the next day, you should get 85-90%. Worked for me for my PPL exams, got me through first time.
I'm not saying this is a way to learn the subject thoroughly, it's just a method to pass the exam. you can re-read and comprehend better later when you are under less pressure.
Oh, and if AirLaw is your first exam, don't worry, it's the dullest, most tedious one, the others are more interesting.(IMHO).