I would suggest not cracking open your undergrad text books to kick off your studying. Get a good, comprehensive MCAT review book and read it all the way through. Highlight sections that you need better understanding in, and then possibly look to your text books for better clarification. The problem with bio and chem books is that they go into more detail than is required for the MCAT. Take a practice CBT asap so you get a feeling for what the test is actually like. I did the mistake of waiting a month before doing so, and as a result I discovered that my approach to studying needed to be revised. And make sure to take a lot of practice MCATs, and to review them once you are done. Make a little note sheet while you are reviewing the tests of what you missed and why. Hope this helps! When are you going to take the test?