<p>Which AP Chemistry review book is best?</p>
<p>Princeton Review + [Khan</a> Academy](<a href=“Khan Academy | Free Online Courses, Lessons & Practice”>Khan Academy | Free Online Courses, Lessons & Practice)</p>
<p>I vote for Barron’s.</p>
<p>I used Kaplan, but most of my friends used Princeton Review, which seemed to be a lot better.</p>