macOS Catalina: Up to Speed (PDF)
The macOS Catalina: Up To Speed guide helps you to get up and running quickly with Apple's latest operating system. This handy step-by-step guide is written from scratch, starting with basic macOS topics and moving on to more advanced features of the operating system, designed to help you to become more productive more quickly. Though comprehensive, the information in this book is presented in a clear, concise manner with screenshots providing helpful visual guidance all along the way.
In no time at all you’ll be navigating Catalina, setting up and maintaining user accounts, managing files, playing music and video, modifying system preferences, surfing the Web and working with applications like a pro.