Photoshop tips

Quickly Copy Layer Masks

You can quickly copy Layer Mask between Layers just by holding [Alt + Ctrl] and dragging the mask between the Layers in the Layers Palette [F7]. To move a Layer Mask, just drag the mask without pressing any modifier keys. When dragging to a Layer with an existing mask, you’ll get prompted to “Replace Layer Mask?”.

Resize a layer

Edit / Free Transform

Or rather, CTRL-T.

Copy merged

Copies all layers, pretty handy

Cropping a certain area

Magic wand the colour rectangle area and then do a copy merged