I am always on the website Amazon looking for books to read. Often times, I will compare the cost of an ebook vs the physical copy. Usually, the kindle version is cheaper and that is how I save money buying books. If the book was meant for school or something dense like an encyclopedia, then I opt for the physical copy. Also, waiting until some type of holiday comes around is a good idea to buy ebooks on sale. Sometimes, there are random sales so it still pays to check back every once in a while.