Apple ID Support Web Page
Where to Get Help for Your Apple ID
Your Apple ID is important for using with both your iPhone or iPad and iTunes on your computer.
Apple uses your Apple ID to keep track of all of your app installations and purchases, along with all of your purchased content on iTunes and in iBooks. It's even used when you setup an appointment at the Genius bar at Apple stores and for telephone support. Here's how you can get help from Apple when you have problems with your Apple ID.
On the Web page for Apple ID Support you can manage your Apple ID and your settings, recover your Apple ID if you forgot it, recover or change your password, manage mutiple Apple ID accounts, and request support from Apple.
The full URL of the Web page is: http://www.apple.com/support/appleid/