There are a few basic things someone using any graphics program should know. These include how to access tools, troubleshoot, and actually use the program. Right now this page is incomplete due to lack of ideas and my own laziness, but really, it'll be done soon. Brushes Brushes enable you to change the size and shape of your drawing tool.
Some brushes are pretty standard, such as the various circle-shaped brushes to be used for drawing.
Others are a little more out of the ordinary, such as a fist, a bird, and an airplane. There's also the airbrush tool, which lightly sprays on some color and doesn't make the color full and dark until you go over the same area a bunch of times. It's very similar to the paintbrush tool, but instead of painting the actual color selected, it paints a lighter color than the one that's selected. The button to make your tool the Pencil tool in the GIMP toolbox. The button to make your tool the Paintbrush tool in the GIMP toolbox.