Some vendors rent copies of current textbooks. Be sure to search by exact ISBN number to ensure that you are finding the correct edition. Renting the wrong edition will cost you time and money. If you don't know the ISBN number, look it up at the Paper Tree Bookstore website first.
Make sure that any required/corresponding CDs, DVDs, etc. are included with your book if you are able to rent it. Also, know that any keycodes that are required to access online supplemental information may not necessarily work with a rented textbook.
Finally, allow enough shipping time to receive the book before class starts.