Digital Imaging Advanced
Here we look at some slightly more advanced - yet really not so complicated - ways of using Photoshop to correct images that have problematic lighting.
Exposure
This series of videos provides detailed instruction on how to work with images to compensate for the fact that they were shot in very difficult lighting conditions, perhaps in indirect sunlight, or when you're shooting from an area of shadow into the light.
Layers
The layers panel provides a simple and safe way of correcting an image without tampering with the actual pixels in the original.