We suggest you back up all electronic purchases to ensure that you will always have access to them.
You can back up ebooks simply by copying them to a secure location, burning them to a disc, or saving to a flash drive, external hard drive or to the cloud.
If you lose your ebooks, you can generally download them again from your order history on you Account page. Just log in and go to My Account and click on your order to view the order details and download links.
We reserve the right not to replace lost books. So please back up your books!