macOS Support Essentials 10.13 - Apple Pro Training Series: Supporting and Troubleshooting macOS High Sierra
This is the official curriculum of the Apple Sierra 101: OS X Support Essentials 10.13 course and preparation for Apple Certified Support Professional (ACSP) 10.13 certification--as well as a top-notch primer for anyone who needs to support, troubleshoot, or optimize mac OS Sierra. This guide provides comprehensive coverage of High Sierra and is part of the Apple Pro Training series--the only Apple-certified books on the market