<p>Is it good to use cliffs ? I bought it but did not take the AP class (long story) . But is it effective to use this AP prep book for the Subject Test instead ? And for which one: E or M ? </p>
<p>PS --- idk if there's already a thread about this. I couldn't find it.</p>
<p>IMO no, Cliffnotes goes into too much detail. I would just buy Princeton Review or Barron’s (or both). Princeton Review is good because it has the best practice tests and is easy to understand, but Barron’s has better content, and will probably get you a higher score.</p>