THE MOVE TOOL

The most basic, but quite possibly the most used tool found in the toolbar. There is a surprising amount of functionality in this guy.

Click Here to View Move Tool video

(length 9:49)

how to find it if it isn't there (windows/tools)
keyboard Shortcut 'V'

move selected layer
shift move to keep alignment to 45°
alt-move to copy and paste
move guides into image
how to bring up ruler
view/ruler
ctrl-r
alt-move guides to change direction (hor to ver)
remove guides
with guides, layers will snap, if not, to turn on snap go to view/snap
move origin in ruler
right click ruler to change units
nudge
shift nudge

right click to select layer/group
shift R click to select multiple
sh R Cl again to deselect
select similar layers (finds shapes, rasters or smart objects, does not find sim blending modes)
link layers

autoSelect Layer/Group
sh Cl to select multiple
sh Cl again to deselect layer
transform controls checkbox
align two shapes/bounding boxes
align three shapes/bounding boxes (distribute evenly)
these align tools generally best left to Adobe Illustrator
auto-align pictures (for splicing)

shift-move to auto-align in space (centers image)