Adobe Photoshop

Shortcut Keys
Function
Ctrl + N New
Ctrl + O Open
Ctrl + Shift + N New layer
Ctrl + S Save
Ctrl + Shift + S Save as
Ctrl + Shift + C Copy merge
Ctrl + zero Fit on screen
F11 Image size
Ctrl + K Preferences
Ctrl + P Print
Ctrl + Z Redo/Undo
Ctrl + A Select all
Ctrl + ] Bring layers forward one level
Ctrl + [ Send layers backwards one level