When you’re using any of Apple’s computers, smartphones, or tablets, an Apple ID is integral to not only setting devices up in the first place but getting the best out of them as you use them, too. When you pay a premium to use an ecosystem that “just works,” not having an Apple ID cripples the experience.
Note: For this guide, we are going to make the assumption that you already have an iPhone or iPad up and running, and that you need to create an additional Apple ID. These steps are the same even if you are setting up a new device. When you reach the point of entering your Apple ID, tap “Forgot password or don’t have an Apple ID,” before tapping “Create a Free Apple ID” and following the process.
The whole process starts, as so many do, in the Settings app. If you are signed in to an Apple ID currently, tap it at the top of the screen and then tap “Sign Out,” right at the very bottom.
After you sign out (or if you’re not already signed in), tap “Sign in to your iPhone” at the top of the screen.
Tap the “Don’t have an Apple ID or forgot it” link and then tap the “Create Apple ID” option once the new window pops up.
Now you need to go through the process and give Apple the information it needs to create the account. That includes entering your date of birth and your full name. Once you’ve done that, tap the “Next” button to progress.
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Source: How-To Geek
