When working in Photoshop, simple tasks can become a hindrance to your workflow. To help out, I've listed a great selection of Photoshop shortcuts right here, all guaranteed to speed up your workflow once you get the hang of them.
The following are 22 of my most commonly used Photoshop Keyboard shortcuts. These are simple commands that are pretty easy to pull off, and they will certainly speed up your productivity and workflow.
Save As: Control Shift S
Save for Web: Control Shift Option S
Undo: Control Z
Step Back: Control Alt Z
Duplicate: Control J
Duplicate all visible Layers: Control Shift Alt E
Hide Extras: Control H
Full-screen: F
Default Colors: D (black and white)
Flip Foreground and Background colors: X
Hand tool while in another tool: Hold Spacebar
Fill with Background color: Control Delete
Fill with Foreground color: Alt Delete
Open Fill dialog box: Shift Delete
Decrease/Increase Brush Size: [ or ]
Deselect: Control D
Restore Last Selection: Shift Control D
Move tool while in painting tool: hold Control
Eyedropper while in any paint tool: hold Alt
Cross-Hair Cursor on any painting tool: Caps Lock
Lock transparent pixels: / (back slash)
Commit edits when typing: Control Return