Dulcet Tones 0
I have another podcast up at HPR.
This one may be of wider interest than the others I have there. It describes how I use the free and open source Gnu Image Manipulation Project (commonly called the GIMP) to edit pictures for posting here. The GIMP is freely available for Unix, Linux, Mac, and Windows.
I based the podcast on this picture.
It is hardly an exhaustive description of the GIMP, which is a huge and powerful program, but, if you are interested in exploring the GIMP and freeing yourself of proprietary image-editing programs that cost umpty-ump hundreds of dollars, I think you will find it a useful introduction.
For detailed tutorials on the GIMP, you can do no better than this.