The content for these tutorials is fabulous! They are very thorough. The audio quality is very good on some of these tutorials and not so good on others. Additionally, some of the tutorials are more engaging than others. I think the requirement to advance the screen might be a technique to keep the user engaged. If so, I think the technique works a little if you are viewing the tutorials as an individual rather than in a class setting. So far, the tutorials I use most are "Deciphering your Assignment" and "Using Wikipedia for Academic Research". The audio is good in both of those. I've played these tutorials in class in preface to a discussion or activity. I've also linked to them in an LMS so that students could review them on their own as needed. I typically include the accompanying quiz questions in the LMS.