One thing I notice is that everyone is assuming paint polishing is the only thing you need training for. Granted it's the most skilled part of detailing, but it's not the only thing you have to learn to be a pro detailer.
Researching proper care for the various surfaces on the car is essential to being a good detailer. Knowing how to remove stains. Which ones can be removed, which ones can't. Knowing what kind of material a seat is upholstered with etc...
Most everything requires practice to be efficient. That's why a person's years of experience can be just as good of marketing tool as the training they have had. Nothing wrong with training. It can definitely speed up the learning process but I just don't see it as necessary.
My thinking might be flawed though. I'm a self-taught amateur web site designer and because I have never been trained at it, I suffer through learning things the hard way and if I had proper training, my websites would probably be better and I would have less headaches.:crazy2: