I currently am buying all the module apps he has and downloading all the videos onto my Iphone I don't have a lot of music only a few hundred songs so lots of room. its annoying i cant click a download all button in the app and have to keep doing 5 at a time but meh.
my strategy is to go through module then at the end of each module when I have made notes on it all pretend the exam is in a day or two re read my notes constantly sit mock exams and note where i missed marks then go back through those bits and find as many questions in textbooks as i can try all some of those retest until 100% barring silly mistakes (eg if i get the concept and method but made an arithmatic mistake then whatever we testing i understand the concepts.
if you follow a similiar method then anything that isnt covered is likely to be spotted. its not even the end of September yet if you prep properly from now and work hard it will be hard for anything to catch you out.