Dear Cornelius,
thanks for your answer.
Appendix B is the version history of file "L00.10_PM_PrepCast_Student_Workbook_Version_1.02.pdf" only as I understand. There is no version history of all the PrepCast files (e.g., videos are added or updated). But in this case I will refer to Appendix A (= Errata) of the file "L00.10_PM_PrepCast_Student_Workbook_Version_1.02.pdf" which gives hints to corrections of all the PrepCast files.
Nevertheless I like your videos even if I need a lot of time writing down important facts (e.g., I need 1.5h for 15 min hardcore lesson)!
Greetings and a H N Y 2014 from Munich to Silverado, CA!
Ciao Daniel