So, GIMP is installed on your computer, you need to make a quick change to an image for some project, but don't want to learn about computer graphics just to change an image; totally understandable. GIMP is a powerful image manipulator with many options and tools. However, it is quick and somewhat intuitive (after a time) for the small jobs as well. Hopefully, these quickies will help you with your quick problem and help you to stay friends with The GIMP; and ready for the more complex tools and methods later, when you have the time and inspiration.

A couple of words about the images used here. The images came from APOD [APOD01], Astronomy Picture of the Day. The screenshots were taken on my desktop which is sporting this APOD [APOD02] image.

All you need to know to start this tutorial, is how to find and open your image. (File → Open from the Image window).