Forgive my ignorance as a non-Mac user, but isn’t the screen that shows up when pressing WIN+Tab similar? It shows all your open windows and their content, plus (iirc) let’s you switch to/create additional desktops.

I taught my wife about clicking the first item and shift-clicking the last item you want selected. She knew about holding CTRL to select/deselect multiple items but not that shortcut. That’s when I realized I don’t even remember learning most things about operating a computer.

I only recently found out about the middle mouse button thing when accidentally clicking on the new tab button with a folder location on my clipboard.