Today lesson is now available in the Book : you have an audio file and a slide pdf. 

Sorry for this unconvenience: due to a maor problem in the WebEx platform yesterday it was not possible to make a video (we have no good stand-aloe video recording software at home).  I will try to make a video in the next days. 

Reminder: we will try to have a WebEx at 11, if not possible I will give you the same pdf+audio+Chat