save: Ctrl+S
import: Ctrl+I
Undo: Ctrl+Z
Duplicate: Ctrl+Shift+/
Link: Ctr+l
Select all: Ctrl+A

I also used mark in (I) and mark out (O) all the time, which I never really did before. I found this immensely useful as it feels much more organoid and time efficient than dragging in an entire clip and trimming it in sequence.