Other
Apple: Mac Os X Keyboard Shortcuts
Mac OS X is the popular operating system that has been sold with Apple Macintosh computers since 2002. This site provides an extensive list of keyboard shortcuts that perform special operating system tasks.
Get Safe Online
Get Safe Online: Safe Mac Use
Mac OS X is the operating system that Apple introduced for Macintosh computers in 2002. This resource provides advice on how to make a Mac OS X installation secure.
Goodwill
Gcf Global: Using Mac Os
A website with 14 links plus a quiz on information about macOS Basics including links to topics such as Using macOS and Extras.