I think it is important, educationally, to go trough the process of drawing Dealing Ranges, over and over again, until a person feels confident they understand the concept. Possibly have a slide that shows price, then have the same slide with the dealing range drawn in and do a lot of them. For new people learning, this is what they need and this allows them to better relate to YOUR educational videos... Teaching the concept is an important part, but the actual implementation on the charts is what people need and what will commit them to your videos or website ...