IMHO Jeremy Pratt's Q & A for the PPL is a better book to aid study for the JAR PPL than the confuser. It worries me that there is a perception among some that by using the confuser, you can learn 'parrot fashion' the answers to the exam questions and thus skip learning the subject. Surely the idea of this kind of study material is to assist the student gain sufficient knowledge to progress to being a safe pilot rather than just passing exams.