Shortcut 'C' to select the crop tool
Then Shift+Alt to resize from the centre
Zoom in on MAC: Command +
Lasso - l key
Marquee - m key
Quick way to find your layer you want: mouse over a layer, alt+right click
Make a duplicate copy of a
layer - alt+shift+right drag
Control + D to deselect
Control + T to transform
Use quick mask to do a selection
Press D to go back to default colour
Press Q for quick mask mode
Press B for Brush tool
Then gently paint over the area you want
Once you are done, press Q to exit Quick mask and leave the area selected
How to change the colour for a specific area:
Do all the steps of quick mask above
Click on the adjustments panel > Hue/Saturation > Properties tab > mask > invert > Hue/Saturation tab > tick the colorise box > change the brightness/hue/etc.
Click on the quick mask tool (just below the colour on the left)
