I have recently completed the development of a new Processing-based course for beginners wanting to learn the principle concepts of programming and how to apply them in Processing sketches. The course is a six week module and is aimed at an arts program University level. You can download the entire course with 200 pages of documentation, 10 example files, the course outline and 3 Quizzes from www.processing.lyndondaniels.com
I hope you find it to be useful.
Regards
Lyndon Daniels