Hi Sam, I'm doing my PPL and have found that the best way to do the exams is to absolutely hammer the books for a week in conjunction with whatever other aid you have (I use one of the PC based confusers) and then do the exam. Then forget about that one and do the next. Don't try to build cumulative knowledge, just get the tick in the box and get on with the next one. The important stuff you'll learn as you learn to fly anyway, I can't say I'll ever need to know about the organisation of the ICAO again.