Currently Being ModeratedAug 16, 2013 5:52 AM (in response to Spankmeirock)
See: http://support.apple.com/kb/index?page=search&src=support_site.home.search&local e=en_US&q=manage%20apple%20id%20 to manage your account. But, be careful about changing the Apple ID itself, the apps and tunes that you have downloaded are permanently linked to your current Apple ID and cannot be transfered to another ID. You can change the email address, however.
Currently Being ModeratedAug 16, 2013 5:59 AM (in response to Spankmeirock)
You should be able to update the primary email address on your account by logging into http://appleid.apple.com , or by logging in to your account via the Store > View Account menu option on your computer's iTunes (that should give you an Edit button to the right of your current email address).
When you've updated it you may then need to log out of your account on your iPhone and iPad by tapping on your id in Settings > iTunes & App Stores and then log back in for the account to be 'refreshed' on it and the new version of it to be recognised.