Here's a thought for ya,
Get a job in one of those shops as a base level "helper". If you're smart enough to teach, you should be able to pick up alot of the info that you're in search of. Plus, you'll get paid to work and learn, instead of paying to learn and then finding a job.
Normally; if you're up front with an employer about this kind of thing, they are more than willing to take you on. Maybe for a little less pay than an experienced guy, but the positive for the employer is that they get to train you their way, on their machines. Eventually, you'll work up the ladder.
Hope that helps ya,