Usually, the best deal is buying gently used textbooks from other students or from a site like eBay or even Craigslist if you are fortunate enough to find someone with the textbook you are looking for. The library often has reserve copies of many textbooks that can help you at least temporarily. The campus bookstore is often the best deal when you need the textbook immediately. It is often cheapest to rent textbooks, and if you feel one is worth reusing to buy it. Also, unless you have a good spot to store all of the textbooks they tend to be clutter and rarely if ever used again. Many of the elementary education major books, especially from senior year, are worth keeping. For most textbooks, especially if you take good notes, it is not necessary to buy them and then find a place to store them. You can even make copies or scanned images of things worth notating and charts and maps and the like. It is possible to buy a textbook and sell it at a profit, but you have to find a good buyer and possibly figure out the shipping details. There are instances when a person finds a buyer online only to discover it costs them more to ship the item than they charged for the item.
Below are some sites with used, new, electronic, and other textbook options, and please feel free to click on the ads as they help support the site and keep the affiliate account active. You can sell your textbooks to places like ecampus.com, which is one of the Internet’s oldest and most respected ways to buy the cheapest textbooks. Notice, Kobo is an e-reader, which can be a rather luxurious alternative to an actual book. Amazon would not let me join their affiliate program because it excludes residents of Illinois. Surprisingly, with a little extra effort you can find prices cheaper than Amazon and book rentals are almost always cheaper than Amazon. You can Google “used textbooks” and find many other options.