iTunes is a free application created by Apple. It is used to purchase, store and organise digital media files, such as music and movies. It is also used to download applications for Apple devices, such as iPhones and iPod Touches. Apple sells prepaid iTunes cards and certificates to give as gifts or to use in lieu of a credit card when purchasing media. Gift card and certificate balances can be viewed by logging into your iTunes account.
iTunes on Your Computer
Launch the iTunes application from your computer and look in the top-right corner of the iTunes Store screen. Here you will see your iTunes balance beside your Apple ID name. Each time you purchase something through iTunes, the amount will be deducted from this balance.
iTunes on Your Device
If you have an Apple device with an iTunes Store application, such as an iPod or iPhone, you can check your balance by opening the app, scrolling down to the bottom of the screen and selecting "Redeem." Here you will find your iTunes account balance, as well as a box for you to type in gift card codes to add to your balance.
App Store on Your Device
If you have an Apple device with an integrated App Store, you can check your balance by launching the App Store, selecting "Featured" from the toolbar at the bottom of the screen, scrolling down to the bottom of the screen and selecting "Redeem." Again, this is where you will find your iTunes account balance, as well as a box for you to type in gift card codes to add to your balance.
Where to Purchase
iTunes gift cards can be purchased from many retailers, including Target, Walgreens, grocery stores, chemists and Apple Retail stores. Alternatively, you can use your credit card to purchase a printable iTunes gift token online. To do this, launch iTunes, click "iTunes Store" in the navigation menu at the left side of the page and click "Buy iTunes Gifts," located on the right side of the page under "Quick Links."