If you are looking for shortcuts that increase your productivity and make you a better designer,

then Photoshop Shortcut Keys will be a valuable resource for you.

• Ctrl + N: Create a new document
• Ctrl + O: Open a document
• Ctrl + S: Save a document
• Ctrl + Shift + S: Save a document as
• Ctrl + W: Close a document
• Ctrl + Z: Undo the last action
• Ctrl + Shift + Z: Redo the last action
• Ctrl + A: Select all
• Ctrl + D: Deselect
• Ctrl + T: Free Transform
• Ctrl + J: Duplicate layer
• Ctrl + Shift + N: Create a new layer
• Ctrl + Shift + M: Create a new merge layer
• Ctrl + Alt + Shift + E: Create a new stamped layer
• Ctrl + G: Group layers
• Ctrl + Shift + G: Ungroup layers
• Ctrl + Alt + G: Place a layer in a new group
• Ctrl + Shift + Alt + G: Place all layers in a new group
• Ctrl + E: Merge visible layers
• Ctrl + Alt + E: Merge layers as a new layer
• Ctrl + Shift + Alt + E: Merge all layers as a new layer
• Ctrl + Shift + U: Desaturate
• Ctrl + I: Invert colors
• Ctrl + B: Adjust brightness/contrast
• Ctrl + M: Adjust curves
• Ctrl + L: Adjust levels
• Ctrl + Alt + L: Adjust exposure
• Ctrl + Shift + L: Adjust the color balance
• Ctrl + U: Adjust hue/saturation
• Ctrl + R: Show rulers
• Ctrl + H: Hide edges
• Ctrl + Alt + H: Show/hide all layers
• Ctrl + Shift + H: Show/hide all guides
• Ctrl + ; : Show/hide the grid
• Ctrl + Alt + ;: Show/hide guides