Press the Home button. Tap "Settings." Tap "Store."
Tap "Sign Out," then "OK."
Log into your computer. Click the iTunes shortcut on your desktop or "Start" menu.
The iPod touch requires a user's iTunes account to purchase songs and videos, download podcasts, and buy and install apps. If you buy a used iPod or want to use a different account, you'll need to remove the Apple ID associated with the iPod before you can buy or install any new features. There are two ways to do this: a full reset of the iPod software, or signing out of the iTunes Store.
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