10 Things You Must Do After Buying a New Mac
Set Up Your Apple ID When you set up your Mac, you’re required to sign in to your Apple account. If you skipped it earlier, now is the time to do it via the Apple menu > System Preferences > Sign In.
You can’t use the App Store, download updates, or use iCloud without logging into an Apple ID, so you definitely should.
Activate Service and Support Coverage A key thing to do is activate your Mac’s Service and Support Coverage.