So you want to read something that isn't a textbook. Great! Here are some options for finding something delightful to read without spending a penny.
Libby is an app used by all of the above public libraries to offer ebooks and audiobooks. You can search for, borrow, renew, and return eitems similarly to the way you would borrow print materials from a library building. But because the materials can't be late, you can't get fined!
Hoopla is a company that partners with public libraries to offer a Netflix-like experience. Borrow ebooks and audiobooks, and stream TV, movies, and music.