NetGalley is one of the leading distributors of ARC's (advanced reader copies). They get pre-publication books into the hands of booksellers, librarians, reviewers, educators, journalists, and many more!

Scribd is a book subscription platform containing thousands of e-books, audiobooks, podcasts, textbooks, etc. For a small monthly charge, you can have unlimited access to all of these books! It helps for those times waiting in between audible credits.

Owlcrate is a monthly book subscription box; each one contains a book and various goodies curated by the Owlcrate team to correspond to the monthly theme!

Cloud Library is an app offered by many libraries across the US; offering audiobooks and e-books to thousands of readers as long as you have a library card. If your local library doesn't use Cloud Library, there are many other options like Libby! Just ask your local librarian; they would be more than happy to set you up with access to their digital libraries.