<p>So the 2010 edition of the PR Physics C book isn't out yet...I was going to order all my prep books today. Note that if I wait until it comes out in September it also means I'll have to wait to start prepping for AP Euro and the SAT so I can get free shipping on Amazon...LOL. Also I'm a junior and likely going to take the SAT in december (Maybe January if I wait to order)...</p>
<p>Would it be worth the wait (I can't pass up free shipping lol), or should I just order the 2009 edition now? </p>
<p>Also what usually changes from year to year in the PR Physics book?</p>