YOU CAN CHANGE YOUR billing address, switch the credit card you have on file for Store purchases, and edit other information in your Apple account without calling Apple. Just launch iTunes and click the Store icon in the Source list. In the Quick Links area on the right side of the Store window, click Account and then sign into your account in the box that appears.

Once you do, you’ll see your account name (email address) in the main Store window. Click it. In the box that pops up, re-enter your password and click View Account. If you want to change your password or secret identity-proving question, click Edit Account Info. To change your billing address or credit card information, click Edit Payment Information. You can also deauthorize all the computers that can play songs purchased with this account (more on why and when you’d want to do that on Deauthorize Your Computer).