Big changes are coming to the MCAT in 2015, and Kaplan is here to help you prepare for them.
With four brand-new sections, 80% more questions, and the addition of new science content including biochemistry, psychology, and sociology, the 2015 MCAT will be a completely different test. In order to be prepared you need to understand the exam and start planning for it now, and this guide is the first step.
MCAT 2015: What the Test Change Means for You Now is your complete guide to the new exam, with outlines of both old and new subject areas, a short-form practice test to help you get ready, and advice on choosing and prepping for the MCAT that’s right for you. 
This book is not meant as exhaustive, but as a free download it is also a great way to get a feel for the changes and the new MCAT. If medical school is the goal or even on the radar I recommend you read this, it doesn't cost anything but a little time.
pretty informative, crucial to knw if u're getting into med scl.. lots of unnecessary lengthy sentences though.. the book isnt big.. but it could have been relatively shorter