It's the easiest thing to do!

There are many bookstores, one on campus and several off campus. It does not matter which one you go to...

 
List of MSU Area Bookstores:
   
  You can buy your textbooks when you arrive on campus-
   
  Here are the few simple steps...
   
You need your class schedule
You need to know the class (i.e., MTH 124) and the Section number (i.e., 006)
At the bookstore, classes are arranged alphabetically on the shelves
You find your section number (Some classes say "all sections," which means all
  sections use the same books)
Your book(s) will be right above the card indicating your course number on the shelf
Sometimes a professor will not report to the bookstore what book he/she is using. In
  this case you need to wait until the first day of class to find out.
Many students buy books during the first week of classes
Many students prefer to get their books before classes start (See below)
   
   
  You can buy your textbooks online before you arrive to campus-
   
You need your class schedule
You need to know the class (i.e., MTH 124) and the Section number (i.e., 006)
Go to the bookstores' Web site, click on "textbooks" and begin a search
Select the term, course, course number, and section
The books for your class will be listed on the Web site
   
  What is the difference between required and recommended books?
   
  Generally, required books are needed for the class as provided by the professor.
  Recommended books supplement the course topic. These books will aid in
  understanding the topics covered in the course. Once classes begin, your professor
  will supply you with a list of textbooks for the class on the syllabus. The bookstores
  will receive the book list before classes begin.