I made the following for a class over the summer. Enjoy!
Tool Hotkeys:V – Select
M – Marquee
L – Lasso
C – Crop
I – Eyedropper (If you select the tool, click and hold in the workspace, then you can drag anywhere on the screen to sample a color, even outside of Photoshop.)
J – Patch/Healing / Red Eye
B – Brush/Pencil ([ or ] brackets used to increase/decrease size)
S – Stamp (hold Alt to make stamp selection)
E – Eraser
O – Dodge / Burn
P – Pen
T – Text
A – Path (Select)
H – Hand Tool (or hold space bar while dragging screen)
Z – Zoom In/Out , Alt + (mouse scroll) – Zoom In/Out
Useful Hotkeys:Ctrl + Alt + N – New Document
Ctrl + S – Save , Ctrl + Shift + S – Save As
Ctrl + Q – Quit
Ctrl + Z – Undo/Redo , Ctrl + Alt + Z – Undo Multiple Times , Ctrl + Shift + Z – Redo Multiple Times
Ctrl + Shift + N – New Layer
Ctrl + 0(zero) – Fit to Screen
Shift + (while moving object) – Maintains Alignment
Shift + Alt (while moving object) – Duplicates Object
Ctrl + Alt + I – Brings Up Image Size / Resolution Options
Ctrl + T – Free Transform
Ctrl + A – Select All
Ctrl + D – Deselect
Ctrl + Shift + I – Invert Selection
Ctrl + Left Click Layer on Layer Pallet – Selects Outline of Shape on Layer.
Ctrl + Alt – Fills Layer with Primary Color.
Ctrl + Backspace – Fills Layer with Secondary Color.
Ctrl + E (while selecting multiple layers in the layer pallet) – Merges Layers
Ctrl + Shift + Alt + E (while selecting the top layer in layer pallet) – Merges Visible
Ctrl + Shift + .(period) – Increase Type Size , Ctrl + Shift + ,(comma) – Decrease Type Size
Ctrl + Shift + L or C or R – Left-align, Center-align, Right-align Type (cursor must be inside text box)
Ctrl + ; - Show / Hide Guides
Ctrl + R – Show/Hide Ruler
F – Free Roam Layout (click multiple times to cycle through the different layout options)
Alt + ↑ or ↓ or ← or → –Adjust Tracking, Kerning, and Leading of Type (while text is highlighted)