E-books are easy to back up by simply copying them to a safe location, burning them to a disc, or storing them on USB sticks or external hard drives. If you ever lose an e-book, you can usually simply download it again via your "My Library" page. Just log in and go to My Account. Then click on your "My Library" to view your purchased titles and download links. We reserve the right not to replace lost books. So please make backup copies of your books!