Quote Originally Posted by CrossLOPER
Depending on how your schedule works, I would wait for about a week before buying anything. I have several books that I did not use. I found several of them to be useful references, but I not much else. You could always sell the books to an underclassman when you are finished with course.
Alternative advice would be just return the books before the usual return date and get your money back.

Note: If the book is wrapped in plastic, this only works if you keep the book wrapped in plastic.