Working with layers
To On Windows, use On Macintosh, use
Move selected layer by pixels

Arrow keys

Arrow keys

Move selected layer by snapping increment

Shift-arrow keys

Shift-arrow keys

Select and move layer

Shift-Ctrl-drag

Shift-Command-drag

Resize selected layer by pixels

Ctrl-arrow keys

Option-arrow keys

Resize selected layer by snapping increment

Shift-Ctrl-arrow

Shift-Option-arrow

Toggle nesting preference on or off when creating a layer

Ctrl-drag

Command-drag