Photoshop Shortcuts

Apple + U-Hue and Saturation

Apple + T-Free Transform

Option + Delete-changes color of image to your foreground color.

Apple + J-Duplicate layer

Apple + E-Merge

Apple + F-run the last filter.

Apple + S-Save

Apple + A-Select All

Apple + V-Paste

Apple + C-Copy

Apple + N-New Document

Apple + D-Deselect

Apple + Z-Undo

Apple + X-Cut

Apple + T-Type Tool

Apple + B-Brush Tool