Installation and Configuration
Update, Upgrade, and Reinstall macOS High Sierra, Set Up and Configure macOS, Use the Command-Line Interface, Use macOS Recovery.

User Accounts
Manage User Accounts, Manage User Home Folders, Manage macOS Security, Manage Password Changes with Keychain Access.

File Systems and Storage
Manage File Systems and Storage, Manage Encryption with FileVault, Manage Permissions and Sharing.

Data Management
Use Hidden Items, Shortcuts, and File Archives, Manage System Resources, Use Metadata and Spotlight, Manage Time Machine.

Apps and Processes
Install Apps, Manage Documents, Manage and Troubleshoot Apps.

Network Configuration
Manage Basic Network Settings, Manage Advanced Network Settings, Troubleshoot Network Issues.

Network Services
Manage Network Services, Manage Host Sharing and the Personal Firewall. System Management Troubleshoot Peripherals, Manage Printers and Scanners, Troubleshoot Startup and System Issues.