There are a lot of things that people will advise you to take or to steer away from in your last free year of life before medical school. If you would like the advice of anyone, I guess I am good enough to answer too. I guess I will be "that guy" and offer you the advice of not studying and relaxing. The reasons are many, but I will highlight my main reason.
Medical school is a black hole. It will (and rightly so) consume your every waking thought, your phone conversations to your family and loved ones, your time in the bathroom (shower included sometimes), and, during the first few weeks of classes, it will even invade your dreams. You will be exposed to a pace of learning which you have never experienced before and drug along until you are simply a torso behind the chariot. You may be thinking to yourself, "Well then I'd better start studying now so I can keep up!" Incorrect. Although you will rue the Pineal Gland that was placed inside your body for making you tired, there is enough time every day for you to sit down and learn the material, provided you are studious enough, while you are in medical school. Your life will suck and there will be nothing you can do about it. The world will seem to blur, days will feel like seconds, weeks like days, and months like years. Before you know it, you will be finishing your first year and embarking on your last summer vacation of the rest of your life. Enjoy your time now with every ounce of yourself. Go exploring, do something outrageous, eat something disgusting, and act in a way that you never thought you would act before. Enjoy your life and everything that is around you. There will be no time to miss it.
I hope that I did not scare you. I did not want to paint a flowery picture of medical school, but I did not want to scare you either. Instead, I was hoping to show you how I feel that medical school is going for myself personally, and how I wish I would have spent my free time before medical school began.
If you are really looking to "learn" before medical school, then I would possibly pick up an Anatomy Atlas (
Rohen's Atlas is always a good one, IMHO) and familiarize yourself with the pictures. Don't worry about names, innervations, vascular supply, connections, or anything. Simply look at the book and the pictures and see how everything fits together. Since you've already had Anatomy once before you could throw in some jargon, but steer away from trying to teach the material to yourself just yet. Some professors stress different information in their materials, and some names in the book may be presented differently as well (i.e., Ligamentum Teres Hepatis versus Round Ligament of the Liver).
I hope that I provided some insight. Good luck with your year off and congratulations on your acceptance into medical school!