Art,
If you want good, keep away from John McKenna's course unless you want a basic intro.
ITC, Infraspection, The Snell Group have what your looking for.
Consider joining the group at:
http://www.your-leaking-house.com/si...use.com/forum/
if you do not want to be flooded with BS.
There are several extremely qualified as well as learning folks there.
I have a link to Infrspection here:
http://www.thermalimagingscan.com/In...r-Training.htm
I have taken Building Science, Lvl I and Lvl II at Flir/ITC.
They are qualified. It is a certification that expires and requires continuing education to remain "Certified"
John will give you a piece of paper for $500, calling you "certified" that's the end of it.
Call and talk to these companies.