September 6, 2011
If you've received a free download code or iTunes gift card, you can instantly redeem it with your Apple ID. While in the App Store, iTunes Store, or the iBookstore, click or tap Redeem, enter the code, and then your Apple ID. If you don't have an Apple ID, you can use the link there to create one. You don't need a credit card number, but you can enter card information if you wish.
To redeem on your computer, open the iTunes Store and click Redeem on the right side under Quick Links. On your iPhone or iPod touch, Redeem is at the bottom of the Featured page in the App Store, and at the bottom of the main Music, Movies, and TV Shows pages in iTunes. In the iBookstore, it's at the bottom of the Featured page. On your iPad, it's at the bottom of main pages in iTunes, the App Store, and the iBookstore.