I've got the Thom books which have questions and answers for each chapter.
I have read each book from cover to cover a couple of times and done the exercises before the exams.
Also for Airlaw and Navigation had a couple of sessions with the ground school instructor
I logged onto Airquiz last week for the ones I still have to pass and it seems a good way of testing yourself.
I am also a tad over 60 yrs so learning is a bit slower
I agree with the other posters that it is not much use just knowing the right answers to the confuser when you are in a real life situation that demands a true understanding of the topic.
One student I spoke to reckoned airlaw was really boring, so I told him maybe you won't think that when you are on a collision course with someone because a,-you are at the wrong flight level and b,-you don't know which way to turn!
Lister