According to Wikipedia, macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple's desktop operating system for Macintosh computers. It is the successor to the 2018's macOS Mojave, and was announced at WWDC 2019 on June 3, 2019 and released to the public on October 7, 2019. Catalina is the first version of macOS to support only 64-bit applications and the first to include Activation Lock.
This Complete MacOS Catalina Manual Help you to How to use it properly. There include 163 pages .
The Complete Macos Catalina Manual - Volume 36 2019
English | 163 pages | PDF | 151 MB
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