For the best iCloud experience, make sure your device meets the minimum system requirements.
Use the latest version of macOS
Update to the latest version of macOS. Choose Apple menu > About This Mac > Software Update. If you’re using macOS Mojave or earlier, choose Apple menu > App Store. See if there’s an update available.
Sign in to iCloud
Choose Apple menu > System Settings, then click Apple ID. If you’re using macOS Mojave or earlier, click iCloud. Enter your Apple ID. When you sign in, iCloud is turned on automatically.
Have you got any questions about Apple ID?
Customise your iCloud settings
Choose Apple menu > System Settings, then click Apple ID. If you’re using macOS Mojave or earlier, click iCloud. Choose the apps — such as Notes, Photos and iCloud Drive — you want to use with iCloud.