"Special Courses" are all those topics that I teach that don't really fit in the crazy quilting categories. While you could include these techniques in your crazy quilts; they more logically fit in traditional quilting (or other craft) categories best.
This technique has been around a few decades but never really "caught on" with quilt shops because they require a sheer fabric (not usually found in quilt shops). It is a wonderful technique to learn if you are a traditional quilter or a crazy quilter that wants to experiment with new techniques in some of your patches. The project is a Santa Clause face wall-hanging that I taught in various quilt shops; resulting in a small wall-hanging (sometimes with a pocket for storing Christmas cards.) It's a pretty fast project and I hope you try this technique.