<p>Your college classes are not MCAT classes. The point of MCAT prep books is that they contain only the stuff you need to know.</p>
<p>This sounds like the tactic often recommended for USMLE step 1 (the test taken at the end of MS2). The difference here is that test is largely a knowledge based test (in contrast to the MCAT) so it makes sense to annotate the main review book (which contains only the most important info) with more detailed info.</p>