I've amassed quite a collection of science books since I've been studying on my own. They are really helpful if you are struggling with chemistry or biology.  Here are my top 9 favorites.

Many of these books are also available for Kindle. I've been thinking about getting one so I can have all my books with me, without having to carry a bag full of books around. I like to study when I wait at the doctors offices or while sitting in traffic. It would be so much easier to throw a Kindle in my purse than to carry books and flashcards around with me.