I’m a little late posting this, but earlier this month I lead a Processing lecture at Lehigh Valley Tech. I went over the basics of what Processing can create and some simple programming examples, including a drawing app that reacts to audio input and a generative art piece that infinitely draws circles.
I’ve posted the presentation PDF and sample files.
In related news, I am teaching a “Creative Coding” class this summer in Processing at Kutztown. The class is open to students and the community.