sign in with your Apple ID
Sign in with your Apple ID to access Apple services such as the App Store, Apple Music, iCloud, FaceTime, Apple Books, and more.
You can sign in when you set up your Mac, or choose Apple menu > System Preferences, click Sign In, then enter your Apple ID and password. If you don’t have an Apple ID, you can create one.
You can view and change your Apple ID information, including your name, photo, contact information, password, security settings, and payment and shipping information.
Your information and content are available on all your devices where you’re signed in with your Apple ID. See the Apple Support article Sign in with your Apple ID.