hi sjm. I have not watched that video, but did you notice the link to the retouchpro review.
http://www.retouchpro.com/reviews/eismannvid2.html
I realize this still doesn't answer the question about how easy it might be to understand, but at least this says the content is good.
BTW, I watched the Total Training Photoshop course (for version 6). Deke's approach is to focus on tools, what they do, and how to use them. I thought his coverage was very good, but I did find his style tedious after awhile. Still, I'm glad I watched this.
Here's the
link