Using keyboard shortcuts is a great way to edit your audio super quick. The key combinations are slightly different if you're on a Mac or PC (ctrl vs cmd).
Cut: Cmd/Ctrl + x
Copy: Cmd/Ctrl + c
Paste: Cmd/Ctrl + p
Select all: Cmd/Ctrl + a
Undo: Cmd/Ctrl + z
Play/Pause: Space
Export: Cmd/Ctrl + Shift + z
This List: ?