Previous Version Table of Contents Installation and Configuration Lesson 1 Introduction to macOS Lesson 2 Update, Upgrade, or Reinstall macOS Lesson 3 Set Up and Configure macOS Lesson 4 Use the Command-Line Interface Lesson 5 Use macOS Recovery Lesson 6 Update macOS User Accounts Lesson 7 Manage User Accounts Lesson 8 Manage User Home Folders Lesson 9 Manage Security and Privacy Lesson 10 Manage Password Changes File Systems Lesson 11 Manage File Systems and Storage Lesson 12 Manage FileVault Lesson 13 Manage Permissions and Sharing Lesson 14 Use Hidden Items, Shortcuts, and File Archives Data Management Lesson 15 Manage System Resources Lesson 16 Use Metadata, Spotlight, and Siri Lesson 17 Manage Time Machine Applications and Processes Lesson 18 Install Apps Lesson 19 Manage Documents Lesson 20 Manage and Troubleshoot Apps Network Configuration Lesson 21 Manage Basic Network Settings Lesson 22 Manage Advanced Network Settings Lesson 23 Troubleshoot Network Issues Network Services Lesson 24 Manage Network Services Lesson 25 Manage Host Sharing and Personal Firewall System Management Lesson 26 Troubleshoot Peripherals Lesson 27 Manage Printers and Scanners Lesson 28 Troubleshoot Startup and System Issues.