b
= the brush tool[
or]
= changing the size of the brushalt
= pick colors
e
= the eraserl
= the lasso toolr
= the smudge toolspace
= pan the canvasx
= swap the foreground and background colorsv
= move toolcmd + shift + j
= new layer via cutcmd + ]
= bring layer forwardcmd + shift + ]
= bring layer to top of stackalt + backspace
= fill layer with foreground colorcmd + backspace
= fill layer with background colorcmd + alt + e
= merge selected layerscmd + shift + i
= invert selection
cmd + drag
= free skewalt + drag
= scale from center