One of my projects for this summer is to update
www.robbayer.com to include a lot of beginning PBASIC tutorials, sample code, etc so that it truly is a much more comprehensive programming site. Then again, there's been rumors of a different language for next year so I'm not sure I want to devote the time yet...
For the present, you can find all my tools (RoboEmu, RoboGUI, etc) as well as the full source codes from the past two years.