I have watched Mark’s videos for years and finally signed up for all of the courses. I was wondering how hard could it be because you have all the material available to you. You’re not going to just slide through these courses. This was evident when I tried to sneak back to check out an answer and I had to start the test all over and I did not pass the first time. going to go back to course one and study it over again better this time. Bravo Mark, videos are nice and clear and informative if you learn better by being shown you can do that; if you learn better by reading you can read instead of the video. As an aside I was looking for the clone ETA 6497 and when I found one, I read the review and the guy on there said he was going to be buying one and dismantling it for a course he was taking. Hmm, I wonder what course that could be?