How to apply the same adjustments to a set of images with having to redo the settings each time
Adjustment layers are fantastic for making edits to your images while still allowing you to go back and adjust the adjustment when you like.
You can simple just drag adjustment layers into other documents, as you would any other layer, and if you have a stack of photos taken at the same time, chances are any tweaks you make to one will need to be applied to the others.