Buying your AP prep books and other such matters...

<p>Out of curiosity, when do ya'll buy your test prep books and use them? Do you use them throughout the year to study or just the month/week/day before the test?
Also, this is my first year taking 5 AP classes, which seems to be the norm around here, and I'm wondering how people deal w/ the last minute studying for 5 different tests that are going to take place over 2 weeks. For example, I have English Language, Spanish Language and Calculus each morning of the first week, then Chemistry the Thursday of the second week, followed by Microeconomics Friday afternoon. I know that it's way early, but I might as well ask. Do you guys that have done this study for each one the night before it comes (in addition to the studying that has been done throughout the year) or in some other configuration of studying patterns.
Basically, and thoughts on dealing w/ taking many AP tests at a time would be helpful, such as how you studied throughout the year and what you did when it came close to test time. </p>

<p>Thank in advance!</p>