Of course, you are probably wondering how to win. Who doesn't like free things, especially if they are books? All you have to do is became a fan of their Facebook page. All of their fans are automatically entered into a drawing to win one of several copies of the book they are giving away that week. (I just joined it. College students especially love free stuff.)
The book they are giving away this week is The Quickening by Michelle Hoover, which follows two Iowa families that try to establish their lives while living in the middle of the Great Depression.
I suggest that you check out the entire Fiction Writer's Review site as well. It has everything from interviews to essays and reviews.