i use the dot point book, for chem.
its full of questions and theres answers at the back, i usually use a textbook and do summeries etc, then use the dot point questions to see if iv actually absorbed the info.
I bought mind in hurstville (took me a long time to find = =, wasnt at dymocks or QBD)
it was in a shop called.....ummm.... "selected tutorial books" or something, not a specific name, its on forest road near 'Music on the Move/Steve's guitar shop", near hurstville library.