Compatibility of Kindle, iPad and B&N Nook Reader Files

Although an e-reader may be capable of reading different types of files, each device is designed primarily for the e-books available from the manufacturer's e-bookstore. Amazon sells e-books in MOBI format, while Apple and Barnes & Noble sell e-books in EPUB format. If you think that should make Nook e-books and iPad e-books compatible with each other, you might almost be right. Each manufacturer embeds code in their e-books, making them incompatible with other readers.

Returning Borrowed Books on a Kindle Fire

Amazon Prime members have access to the Kindle Owners' Lending Library, which enables you to borrow an e-book from a library of over 180,000 titles. Members don't need to worry about due dates, but you can only borrow one book per month. If you're not an Amazon Prime member, you can still borrow books for up to 14 days from a friend. In either case, you should return the borrowed book when you're finished reading it.