Select Last, or Shift Marquee Selection Right ⇧↘

That’s shift-end. If you are shifting in a MIDI region the selection point moves to the end of the current note (or to the start of the next note).

Select parts of regions in the Logic Pro Tracks area — Apple Support

Press Shift–End (the default Select Last, or Shift Marquee Selection Right key command).

I also learned this remarkably useful Marquee selection tip…

Select parts of regions in the Logic Pro Tracks area — Apple Support

If you start recording after making a marquee selection, Autopunch mode is activated, and the marquee selection is replaced by the punch locators. All tracks within the marquee selection are record-enabled, and all other tracks are record-disabled.

  Normalize Region/Cell Gain…    ⌃⌥G

Adjust the gain of the selected region/cells. Like ‘Clip Gain’ but without a lot of visual feedback. It’s a lot easier to adjust if you can see the peak level meter for the region. In any event — I use this **all the time** to start mixes with a hope of getting decent gain staging.

Normalize audio regions in the Tracks area — Apple Support

You can normalize the gain of selected regions in the Tracks area, without opening the regions in the Audio Track Editor. The Normalize Region Gain menu command is non-destructive: the original file isn’t altered, so you can return it to its original state.

  Delete Track    ⌘⌫

Deletes the currently selected track(s). If the track is the only one associated with a channel the corresponding channel is removed from the mixer as well.

Delete tracks in a Logic Pro project — Apple Support

In Logic Pro, Control-click the track header, then choose Delete Track from the shortcut menu

  Halve Region/Cell/Event Length

Make the object one half the size previously.

Cut and paste regions in the Logic Pro Tracks area — Apple Support

When you cut a region in half, the region is cut at its center and the right half is discarded, leaving only the left half.

  Main Window Tracks and Various Editors

I have been skipping the command grouping entries in the command list. There is some utility in knowing what they are. The command headings appear in pop-up menus in places like the Key Commands window, and in the “learn” windows.

I have tried to indicate groupings with keywords, but missed on the first hundred or so posts. This entry gets ‘Main Window Tracks’ and ‘Various Editors’.

Eventually a keyword search will help create a better index into the commands and documentation.

Main Window Tracks and Various Editors key commands in Logic Pro — Apple Support

The following table reflects default key commands included in the U.S. factory preset.