[sbuk]

The cmd+x/c/v keyboard shortcuts have been around much longer than the ctrl+x/c/v equivalents - copied by Microsoft in Windows 3.0; it was all CUA previous to that.

1. So to cut in applications (or anywhere anything is selectable other than Finder), it's cmd+x, as it has been since the early '80s; likewise, paste is cmd+v

2. In Finder, you'd use cmd+c to copy the file, cmd+v to paste a copy and cmd+opt+v to move the file. This was introduced, I think, in Lion (OS X 10.9).

3. Erm, using the menu bar to begin with? Reading the built-in help? Searching the internet? How do you learn it in Windows and/or any other $desktop or $wm?

4. *Emacs keybindings work in most places in macOS, and they have since the first beta of OS X.

Edit: *most...