Not long ago, Amazon made it possible for you to borrow books from participating libraries, and now they’ve introduced the Kindle Owners’ Lending Library. To participate, you must be an Amazon Prime member, and it appears you must own an actual Kindle. There are 5000 titles available now, including 100 current and former New York Times best sellers. You can borrow up to 1 book a month and keep it as long as you’d like. The lending library link, above, has details for borrowing books.