I went to the Catalog in Motion about five years ago and spent an
afternoon in tool heaven. I don’t know if it’s set up differently
now but, at that time, there was a very large room arranged with rows
of stations for particular procedures or techniques. So you could
hang out at the polishing station, for instance, and try out all
kinds of buffs, compounds, etc. Or you could spend time watching an
engraving demonstration or soldering equipment, and on and on. It
was terrific. Very informal and very informative.
If there were actual classes back then I wasn’t aware of them so I
can’t advise in that regard but the Catalog in Motion in general is a
terrific way to try out a multitude of tools and learn techniques
without investing a dime, let alone a fortune. Well worth the time.