Use the Apple ID login page to create or manage your account online at IDMSA.Apple.com and view iTunes Store, App Store, and iBooks payments or billing.
The identification is used for every service and purchasing from mobile devices, downloading apps, and storing content.
Sign in at https://idmsa.apple.com/IDMSWebAuth/login.html and manage your settings with your Apple ID login and password from the website.
Reset a lost or password that you forgot using the resources found on the bottom of this page or call 1-800-692-7753 between 4:00 AM and 10:00 PM Pacific Standard Time any day of the week.
Maintaining your ID is important to the security of your account and is used for purchases on the iTunes Store and setting up iCloud to store photos or backup your files.
The same Apple ID login can be used on multiple devices and will keep your purchases synced across others services. FaceTime, iMessage, and Apps may access your sign in information to process connections.
To view your profile or makes billing changes to your account from a iPhone, iPad, or iPod, tap settings and select the feature.
From a Mac computer, go to the Apple menu and then System Preferences. On iTunes, select Store. In Mail, go to preferences and then accounts.
Important note: keep your email address updated in your ID from Apple. Failure to update your email may result in not being able to login to any service.
For safety purposes, add a rescue and alternate email address in your accounts to reset security questions. Any email stored in a profile will need to be verified with a six digit code sent from the two step verification process.
Do not share your log on with anyone that you do not trust. To share pictures, iTunes purchases or calendar dates with others, it is recommended that you try the sharing features of the device you are using instead.
Further assistance for your Apple ID login can be found at your local retail store or from the support website.
https://iforgot.apple.com/password/verify/appleid
https://appleid.apple.com/choose-your-country
http://www.apple.com/support/appleid/