I have been taking classes on how to present instructional information. These classes have been from informational entrepreneurs, corporate trainers and academics. I'm getting a lot of good stuff out of it and will write up my experiences in a future post.
There is one other person that I would add to the mix. Martha Stewart has built a media empire on giving her opinions and teaching her readers and viewers how to perform a specific task.
This is an interview that Martha Stewart gave to Bloomberg Weekly on how she prepares to give a tutorial. Now it does help that there are a bunch of cameras, a skilled host and the chance to re-do in a moment. That being said, her advice is sound and right on the money. Of which she has a lot of it.