macOS Support Essentials 10.15 - Apple Pro Training Series is the official curriculum of the Apple Catalina 101: OS X Support Essentials 10.15 course and preparation for Apple Certified Support Professional (ACSP) 10.15 certification-as well as a top-notch primer for anyone who needs to support, troubleshoot, or optimize macOS Catalina. This guide provides comprehensive coverage of Catalina and is part of the Apple Pro Training series-the only Apple-certified books on the market. Designed for support technicians, help desk specialists, and ardent Mac users, this guide takes you deep inside macOS Catalina. Readers will find in-depth, step-by-step instruction on everything from installing and configuring Catalina to managing networks and system administration. Whether you run a computer lab or an IT department, you'll learn to set up users, configure system preferences, manage security and permissions, use diagnostic and repair tools, troubleshoot peripheral devices, and more-all on your way to preparing for the industry-standard ACSP certification. This is a step-by-step guide that works through lessons designed to teach practical, real-world tasks, with lesson files that let you practice as you learn.