brigitte, I had some encoding issues with this particular video and I'll post a better version soon. In terms of talking quickly, I'll be more mindful of my voice in my future videos. Thanks for the feedback.

Something is terribly wrong with this video which is a pitty, because I would really like learn about the topic. It is impossible to read what you are writing on the screen. Letters are totally garbelled. Plus you speak so fast that for a non native speaker of English it is difficult to follow. Therefor the written words are doubly important! Please, could you look into that? Maybe encoding is wrong or definition? BTW I'm on a Mac G5/Tiger with beautiful Cinema display and I'tried both Safari and Firefox.