The GIMP is a image manipulation program. It is free (as in speech and in beer), it is open source and it runs on Linux (and other Unixes), Windows and MacOS. It can do nearly all the stuff you can do with Adobe® Photoshop® and more than a lot of other programs. I'll show you in this screencast how to use it for postprocessing digital camera images. There will be a new episode each thursday (european) night.
This show will be available later. Please come back then.