Whether you're a student gearing up for the start of the semester, or someone who's just looking to develop your talents, a good textbook can come in handy. Amazon.com is running a promotion via their Textbook Store, so I thought I'd link to some of my favorite books. All of the books below are books I've either personally assigned as a textbook in my classes, or a book that I've recommended multiple times.
Please note: I do get a few pennies for the click-through if you end up purchasing something. Amazon links are my way of keeping this site advertising-free. And remember: If you're broke you can always try to find these at your nearest public or university library.