What is the key used in conjunction with the command key to cycle through open Finder windows? It looks like the apostrophe, but it's not!

In case you ever need to ask again. The name of the character is, I believe, "grave accent". The character over it is a tilde.

Hi, welcome to the Apple Users Community.

Look at the key left of the "1" on your keyboard.

Best of luck

You're welcome! 😀

The Command and ` key, or ⌘`

The ` is to the left of the z key on a British keyboard.