I have always loved the library. When I was little my mom and I used to go with a canvas bag and fill it to the brim. Within a day we would be finished with all of the books and I would be begging to go back. It was to the point where all of the librarians knew me and I could instantly recognize a new book on the shelf.
I still have the same love for the library, and I still get a little carried away with how many books I check out. Libraries are one of the most sustainable ways to read books and magazines. For every book bought, hundreds, if not thousands depending on the popularity of the book, of people will read it in its lifetime.
Before you buy your books, be sure to check and see if your library system has what you are looking for. You will not only save money, but that's one less thing you have to store (and potentially pack if you will be moving in your future) and resources saved.