Photoshop provides countless ways to color correct photos. No single method reliably produces accurate results that is also easy. This video compares the results of a few methods, and suggests combining techniques.
A step-by-step deconstruction of techniques used to turn photographic images into a comic strip, using only filters and adjustment layers. This emulates an ink on gouache illustration style on newsprint.
An easy method for removing objects from two similar photos, without using cloning tools or content-aware fills.