Hi, Kat, to use Gift Card for ebooks with Nook:
1. Save Gift Cards to your Account
Save Gift Cards, eGift Cards and Online Gift Certificates to your account by visiting your Account Page and clicking on the "Manage Gift Cards for NOOKbooks" link.
2. Shop for NOOKbooks
Shop for NOOKbooks by visiting our Barnes %26amp; Noble NOOKbooks Store on your desktop, nook, or mobile device. You can redeem Gift Cards, eGift Cards and Online Gift Certificates for NOOKbooks or single issues of eNewspapers or eMagazines; however, they cannot be used to purchase subscriptions to eNewspapers or eMagazines.
3. Redeem automatically at Checkout. Once you find a NOOKbook you want, click the "Buy Now" button. Any available Gift Card/Certificate balance will be redeemed first. If the amount of your Gift Card/Certificate does not completely cover your purchase, your default credit card will be charged for the remaining balance.