Tools and Shortcuts

Here are few handy shortcuts that will help your navigation of Photoshop easier. Most of these apply across the Creative Suite as well. Obviously it takes a while to get the hang of these things, but once they start to make sense you'll become all the faster for it.

New File (command+N)
Open (command+O)
Save (command+S)

Go back one step (command+Z) (to redo, hit command+Z again)
To continue going back steps (command+option+Z)

Zoom In (Command +)
Zoom Out (Command -)

Move the image while zoomed in (Hold space bar and move around with the mouse)
Full Screen Mode (F)
Hide/Show Toolbox and Windows (Tab)

Copy (Command+C)
Cut (Command+X)
Paste(Command+V)

Enlarge Brush/Eraser/Clone Stamp/Burn/Dodge etc. tool ( ] )
Shrink Brush/Eraser/Clone Stamp/Burn/Dodge etc. tool ( [ )

Add to Selection (with lasso or selection tool selected, hold shift and drag to add to existing selection)
Subtract from Selection (with lasso or selection tool selected, hold option and drag to add to existing selection)

When I say Command, I mean the apple key next to the space bar. When I say Option, i mean the small key next to Command. Good luck!