a community of practitioners
This may sound critical, but migraines are complex and difficult to manage. I know this because my wife has had them for over 40 years. I have treated many migrianeurs and would not offer treatment during a migraine headache. While this doesn't answer your question, I wonder if this treatment would actually make any difference to someone with a migraine. I think that real time experience would be a better way than a DVD.
my 2 cents,