In the last month, I have given a few guitar lessons on Skype. What I have discovered, is that there are certain students who would benefit just as well from the Skype lessons as they would lessons in person.
Most beginning students, however, would not. The reasons are: 1. I cannot shape the student’s fingers, arms, shoulders, legs, etc. over a streaming video; and 2. We cannot play together.
For the advanced player with tools such as a looper and some device or software with which a rhythm recording can be made, Skype lessons seem to work really well. It all depends on how much control over the students actual movements I need to retain to give them the best experience; an experience as close to in person lessons as possible.