Find the ISBN on the books you need. The number is located on the back by the bar code.
Go to a website that sells books, like Amazon.com or Nursing-books.us. Enter the ISBN into the search.
Look at the listings. If individuals are selling the books, prices may vary. Choose the book you want and place your order.
Most college bookstores sell used books. Go to the bookstore and locate the used books. Most bookstore organize the books by course number. Choose your book and buy it.
Contact people who took the class before. Ask if you can borrow the book or buy it from them.