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>Secondly I bought a Kaplan book which just had 12 tests in it for $20.
Did the Kaplan book not have "secrets" of test taking? Mine did, and one of them was actually useful:
When you have an "analogy" question, where they give you an A:B, and then ask which of the five choices have the same analogy.
What do you do if you don't know the meaning of both A and B?
Well, of the five choices, you will find two that are identical as far as analogies go. As an example, if you have two choices:
cat:kitten
dog:puppy
You know neither of these two can be the answer because there would be no reason to pick one over the other.
Then you'll have another choice with absolutely no relationship (e.g. pen:donkey). You can eliminate that immediately. So now you're down to two choices. Pick one randomly.
But yeah - overall I didn't learn any other big secrets - other than the obvious one of working backwards from the answers for many quantitative problems (don't solve an equation for x - just start plugging them in!).