<p>I took AP World last year and got a 4 using the Princeton Review Book but never really used the book. This year I'm aiming for 5 in APUSH so I plan to fully use whichever study book I get. I've heard Barron's for APUSH isn't good at all. I was planning on using PR again but heard AMSCO and Crash Course are really good. Also books like American Pageant and The Essential Content are good but these along with AMSCO are expensive and I don't want to waste money. Also I know AMSCO is online in pdf for free but the test is being revised. My teacher isn't very good either so I want a book that gives me content and provides good review. Suggestions for a review book that also has content and IS WORTH THE MONEY?</p>