Rotate Left by Nudge Value    ⌃⌥⌘←

Rotate the contents of the selected region to the left.

Rotating an audio region seems like such an odd thing to do, unless you’re making beats or constructing music. It certainly can make for some interesting sounds,

Move regions in the Logic Pro Tracks area — Apple Support

You can also rotate regions. Similar to slipping, rotating moves the region content left or right by the nudge value, but with the difference that content that extends past the region border on one side reappears on the other side, as though the region were a loop.

When an audio region is rotated, it is converted to a one-track folder (indicated by a folder icon in the upper-left corner of the region) containing two regions. If it is rotated multiple times, the number of regions in the one-track folder stays the same, but the junction point between the two regions moves through the folder, reflecting the extent of the cumulative rotation. You can unpack the one-track folder, or unpack and merge it to a single region, by clicking the folder icon and choosing corresponding commands from the menu that appears.

  Nudge Region/Event Position Right by Division

Move the selected region/event to the right to the next division boundary. The division can be seen in the LCD display where there is a popup menu that lets you select the division. 1/4 (quarter note) to 1/192 (triplet 1/128 note).

Move regions in the Logic Pro Tracks area — Apple Support

You can nudge regions (move them in small increments) left or right using key commands. To nudge regions, you first set the nudge value, then move selected regions by this value. Alternatively, you can nudge regions by a set value.

  Fade Out    ⌃O

Create a destructive fade out on the selected audio. The selected audio will be reduced in volume (as defined by the fade curve) from the current level down to zero.

I prefer doing non-destructive fades on regions.

Add fades to audio files in Logic Pro — Apple Support

You can destructively fade in or out on an entire audio file, or a selected area in the Audio File Editor. Your changes are written to the file.

  Hide Subrows for Row    ⌃⌘←

Hides all of the subrows of the current row. Click on the disclosure triangle. Collapses the expanded view.

The same key command will hide tracks in a Track Stack.

Logic Pro Step Sequencer overview — Apple Support

Step Sequencer is inspired by classic hardware step sequencers that have rows of configurable switches or knobs used to generate repeating musical patterns. In Step Sequencer, you create patterns by editing multifunctional steps in the step grid. Each row controls either a sound (which can be a drum kit piece, a note on an instrument, or a range of notes) or an automation parameter (letting you create automation changes over time in the pattern). Each step represents a definable length of musical time–by default, steps are of equal length, but you can change the length for individual rows or steps. You can adjust a wide range of parameters for individual steps, including velocity, pitch, gate time, and more; and edit pattern and row settings including pattern length, row loop start and end points, playback position, and rotation.

  Move Movie Region to Playhead

Moves the movie region (including audio if it has been imported) to the current playhead position.

I don’t work with movies at all. I do watch tutorial videos all the time. Maybe I should create Logic projects for some of my videos so I can work through the tutorial. Something to explore.

Add a movie to your Logic Pro project — Apple Support

You can view a QuickTime movie file synchronously with your project, making film and TV scoring quick and easy. Although you can’t record or edit video directly in Logic Pro, you can replace the soundtrack of a video file with music, Foley, and dialogue arranged in your project.