Post processing is an integral part of digital photography. It used to be that only the pros could afford a good image editing software, such as Photoshop, and knew how to use it well. Times have changed, especially due to the many Photoshop tutorial sites that now freely teach you the fundamentals of Photoshop and post processing.
Photoshop CS5 is such a site. It is a collection of useful filters and downloads along with short practical tips and reviews to enable you to collect and advance quickly.
Visit Photoshop CS5.