Hi Richard,
I agree partly with A330 Dreamer. I have the confuser but didn't want to risk just learning those questions, however when i sat the Air Law exam recently i found the layout and wording of questions to be very very similar. (95% Pass by the way). I also wanted to make absolutely sure that I knew the subject, you don't get a Multi-guess when another aircraft is flying towards you and you're not sure which way to turn
Personally, after reading the Air Law book thoroughly, I went back through it making notes on crib cards of what I deemed to be the important points. I then studied them over and over until I was relatively happy that I knew the subject, THEN I worked through the confuser to see how I got on. I found it a good confidence booster when I was getting the majority of the questions correct. I also used this website
www.airquiz.com You pay £20 and the site generates as many exams as you want for any of the PPL papers. It also marks them and e mails you the results and gives you areas to brush up on. Reckon the subscription lasts 2 years and you can do as many papers as you want in that time.
Don't no if this is any good to you, but a tip an old school teacher gave me for my GCSE'S was to read all the questions thoroughly before even picking your pen up. Then answer all the questions that you instantly know the answers to. Leave the one's you are not absolutley positive on and come back to them. Its purely psychological, but again it is a confidence booster being able to put definitive answers down. There's nothing worse than dwelling over a question for 5 minutes and not knowing the answer, it will knock your confidence for the rest of the paper and put unnecessary doubts in your mind. It worked a treat for my Air Law exam!!!
Hope all this mumbo jumbo helps. Good luck,
Nadders.