CNTRL + J or Command + J = Copy Background Layer
C = crop tool
H = hand tool
L = lasso tool
M = marquee tool
W = magic wand tool
L = lasso tool
M = marquee tool
W = magic wand tool
Z = zoom tool
CNTRL + = zoom in
CNTRL - = zoom out
CNTRL + = zoom in
CNTRL - = zoom out
CNTRL + T or Command T = Free Transform
CNTRL + C or Command + C = Copy
CNTRL + V or Command + V = Paste