How to Sign Up for the iPhone App Store
With iTunes, users can download and purchase audio books, ringtones, movies and TV shows for their iPhones. It also allows you to download applications from the App Store. Before you can enjoy the benefits of the iTunes App Store and all it has to offer, you must sign up for an App Store account. You can do this directly from your iPhone device.
Tap the "Settings" icon on your iPhone home screen.
Select the "Store" tab.
Tap the "Create New Account" button.
Tap the "Next" button to confirm your country or region. A new page will load.
Fill out the fields of the new page with the information it requests. Input your email address in the email field, choose a security question, input your birth date, then create your password.
Enter your credit or debit card information in the fields of the next page. If you want to sign up without a card, choose the "None" option in the "Credit Card" field.
Tap "Next." This will take you to the "Verify Your Account" page.
Tap "Done." The App Store setup will send you a confirmation email.
Navigate to the email account you entered earlier.
Open the verification email and select the confirmation link to activate your account. The App Store will launch and prompt you to input your account name and password. Tap "Sign In."
Tap "Use Existing Account." The "Congratulations" page will load. Tap the "Done" button.