Cut and Paste commands
The usual Cut – X; Copy – C; and Paste – V are available to you but without the need of modifier keys (Command for Mac and Control for Windows).

Separate – B
This does the same as Command+E on the Mac and Control+E on Windows. If you have the cursor placed in a region then clicking B will create an Edit at the cursor position.

Similarly if you have highlighted a selection and click B then edits will be created at both ends of the selection.

Toggle Settings
The next 2 commands toggle between 2 states each time you click on them.

Timeline Insertion follows Playback (pref toggle) – N
This allows you to turn on & off ‘Insertion follows Playback. With it on the cursor will stay where it is when you stop playback and will continue on from that point when you hit play. With it off when you stop playback the cursor goes back to the point you started to play from. Before you had to go into Preferences to change this, which was a real pain.

Track View Toggle – Minus Key (alpha section only)
This will toggle the track that the cursor is on from Waveform to Volume Graph and back.

You can use this in conjunction with the Option key for Mac (Check the Windows command) or if you have groups selected will work across them too.

Nudging Selections
The next group of four enable you to nudge selections both by the Nudge value set in the menu bar, Nudge back – <; Nudge forward – >; but also by the next nudge value up from the set one, Nudge back by next nudge value – M; Nudge forward by the next nudge value – /.

And finally in this section perhaps the most useful (again without the need of a modifier key.
Undo – Z

Links to Part 1, Part 2, Part 3 and part 4.