Last week I had some time to kill and found myself near a Tandy Leather store. Store had a sign "ask about holster lessons" and I did. The guy explained the class, and it appears to be a fantastic deal--$20 including materials, even if the holster isn't one I'd use often. Unfortunately it is unlikely to be quite worth the trip to Columbus.
I thought it was amusing that he called any holster other than the variations made in the class "Tactical".