How do I use a PC keyboard on a Mac I have a very nice and expensive mechanical keyboard. It was designed for a PC and not a Mac.

How do I set up the mapping, so it works like I am used to. For example, I want the Ctrl key on the PC keyboard to act like the Command key on the Mac, so when I press Ctrl-C to Copy, I get the action I am used to.
I too, have a "PC" keyboard, and here's what you have to do (see attached image).

Open System Preferences and go to Keyboard:


Once there, click in the "Modifier Keys"
Select your keyboard.
Change your keys to reflect your change. (I have it changed too!)