There's a book that this lecture is based on: http://www1.idc.ac.il/tecs/ and, while not particularly challenging, it does provide a good overview of how computers are structured.
Isn't the point of the book that it isn't challenging? That it is fun and you want to complete it and get a wide range of lessons and then go off exploring on your own?
I just started looking at this, but if it's "CONFIDENTIAL" maybe they shouldn't have posted it to video.google.com