I attended Equilibrium State -- and got my degree in BS from the school of hard knocks -- hehehe
Seriously though, the only training I ever had was that of those who came before me -- they handed me a buffer, some polish, and said there's a car, lets see what you can do. I started at a dealership, moved on to a detail shop, then another, and another, and yet another taking in and learning as much as I could at each stop. I then moved up to managing mobile units. From there I managed a Ming franchise, and then off to manage another shop. I started my own deal from there (1989), then due to a severe hand injury (1991, almost lost 2 fingers), I closed the doors. I then went on to doing Auto Shows at the OEM level nationally for about 5 years then to prep work for advertising (photo shoots and commercials). I moved up again to managing a detail center at a 200+ vehicle car/day carwash. Went back to doing commercials and print, Did two car's for pebble beach, one wining 8 awards (including Best in Show) the other best in class. After that I put down my towels to be an automotive product specialist. From there, I took about two years off, and now, I'm back to pushin towels once again doin my own deal -- I decide though what I want to do.
Along the way, I've trained lot's of people, (even a few who ended up Meg's Trainers) done more vehicles than I wish to even think about, and wrote multiple training & procedural manuals for OEM clients, dealers, and shops. My $0.02 -- spending the money on a training seminar would be like taking a 6 hour Photoshop class then expecting to get a job at Image Works -- you will walk away with something, but I think this type of work is hands on and wisdom will come only with experience -- keep pushing towels and you will get it, then duplicate the process or, spend $$, hire experienced people, treat them right, have them run your business and just collect the profits!!