Photoshop Shortcuts

Apple+ U - Hue and Saturation

Apple+ T- Free Transformer

Options +Delete- Change the 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 + Z- Undo 

Apple + X- Cut

Apple + C- Copy

Apple +N- New Document

Apple +D - Deselect