Are you interested in a class about the fundamentals of two dimensional drawing using a computer?
I am starting to learn Inkscape for using the laser cutters and have found it fairly easy going. My prior experience consists of several years of intense use of Aldus Persuasion along with some PageMaker and find the skills to be applicable. I also have several years of very casual Photoshop use and found the transition to GIMP to be easy.
I will cover the difference between vector and bitmap (or raster) editing, then present basic usage of the Inkscape vector graphics editor and the GIMP image editor.