Online bookstores and e-book platforms: AmazonKindleStore, GooglePlay Books, AppleBooks, Barnes &; Online bookstores such as NobleNook usually provide a large number of published books in electronic versions. Some specialized e-book platforms, such as Kobo, Scribd and Libby (provided Libby(OverDrive), also provide e-book reading services.
When looking for e-books, please be sure to abide by the copyright law and only obtain books from legal channels.