As any student will tell you, one of the most frustrating aspects of university life is turning up on your first day of the course only to receive a lengthy – and very expensive – list of ‘required’ textbooks that you need to purchase. Yet many students are unaware that, actually, you don't necessarily have to go for the most expensive option; in fact, not only are there many ways to get your hands on alternative textbooks, but they are totally free, too.
https://www.careeraddict.com/5-fantastic-websites-that-offer-free-college-textbooks