I've taken classes with Fay Butler, Scott Knight and Ron Covell. I can recommend all of them. I don't know if Scott still does classes though.
Of those, only Fay's were hands-on. Even though he uses a power hammer (well, all power tools), Fay will teach you about how to shape metal and how to make a pattern to guide the work. The same principles apply whether you're going to use hand tools or power tools, although there are certainly technique differences.
Ron is an excellent teacher, and even an experienced guy would get something out of Ron's classes. I've been lucky enough to attend most of his workshop topics and I learn something new at every one. I'd like to attend another one sometime.
I haven't taken Laze's classes, but I'd really like to. It's on my list.