I'm not experienced, Tony, but a student like yourself. Air Law's as dry as it gets, and the only way I found to din it into my noggin was to read, test, re-read, re-test until it began to stick.
The resources I've used to date have been the AFE books, coupled with Air Quiz (
AirQuiz - Online Practice Examinations for Pilots!). Thus far, they've served me well on the two subjects taken (Air Law and Met) but as I've never encountered elements of either subject in everyday life they were a bit of a slog, it has to be said.
When it comes to the exam itself - READ THE QUESTION. When you've settled on your answers, READ THE QUESTIONS AGAIN. There's often a single word in there somewhere which gives the nod as to the way to tackle a question which will have you torn between two answers.
Best of luck with them.