How to close open windows on MacBook Air for technology-challenged users?

You can click on the red bubble with an x on the top left corner to close a window. This will close a specific window, but the app the window belongs to, will remain open.

If you want to close an app entirely. go to the app's name on the menu bar, and click on Quit "app name".

You can read the macOS user guide in the link below.

click here ➜ Quit apps on Mac - Apple Support

Simply press Command + W to close a window.

If you want to close (quit) an app, then press Command + Q.

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