One thing people here seem to be neglecting is that the MCAT is more directed at challenging your ability to think critically, digest information, and function well under pressure than how well you can regurgitate information. It's not really a science test; it's a test-taking test. Just about everyone who takes the MCAT and is seious about going to med school will have been bombarded with all the material on the test for years. We all speak English (presumably), so all the basic anatomy, physics, chemistry, and biology should be old-hat for most. It's the questions that require you to synthesize everything you've learned and discard red herrings within the passage that trip people up. I'd suggest getting an exam guide and briefly going through it to train yourself how to interpret the material. Get a feel for what kind of questions will be asked on the test so that you develop a familiarity with the test structure and format and can integrate your MCAT studies with what you would normally be doing for your classes. In other words, figure out how you need to understand the material to do well on the MCAT so you can kill two birds with one stone throughout college.
That said, don't go overboard. You still have a few years before you'll take the MCAT, so don't bother killing yourself with intensive study right now. Enjoy school, take care of your classwork, and get involved in some extracurriculars. Stressing about a test that you're almost certainly going to do very well on 2-3 years in the future is pointless.
