Computer Hope
Computer Hope: Computer Operating Systems
This site contains general information about operating systems as well as troubleshooting help for a variety of operating systems.
BBC
Bbc: Operating Systems, Application Software and Programming Languages
Read about modes of operations and operating system functions. Then take an interactive quiz to test your understanding.
Goodwill
Gcf Global: Windows 10
A website with 12 links to information plus a quiz on how to use Windows 10. Links are on such topics as Windows 10 News, Using Windows 10, and Extras.
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.
Goodwill
Gcf Global: Computer Basics: Understanding Operating Systems
Find out why an operating system is the most important software that runs on a computer.