I had a couple of issues with the first few videos. When we were supposed to "float left" and the second part of the text was to appear, mine never did. Also, my navigation buttons never changed at all. I went through the videos a couple of times, doing everything along with the videos each step along the way, but it never changed. Frustrating.
He could have made the video better by explaining why he was telling us to click on things and change values, but he really didn't get into any of that. He kind of assumed that we would know why.
Sorry you feel frustrated, Carla. One of the problems with trying to create a short video tutorial is that it's not possible to go into great detail. You might find the written version of the tutorial answers your questions. It's in six parts, and goes into much greater detail, explaining not only what to do, but also why. Part 1 can be found here: http://www.adobe.com/devnet/dreamweaver/articles/first_website_pt1.edu.html.