Are you talking about DIY seminars just so that you can do a little more of your own repair work?
Or actual vocational programs geared toward making rv-repair a PT or FT career?
For technical training there's this guy:
Home - Mobile RV Academy … who travels around giving high level training programs and various falsities throughout the west. I haven't taken any of them or spoken to anyone who has.
Also, in Colorado specifically there are several mobile and brick & mortar repair facilities (besides just camping world) which have a lot of training resources and some seminars that they put on for the public. If you watn to stay central on the front range, I would contact Turbo's Mobile RV Service, based in Monument (
Turbos RV | Mobile RV Service). I happen to know the owner, and although I do not use him for a lot of my own work (he's too high end for me) he has made a good success out of his business, serving people all of CO and some surrounding areas, and does really quality work. It's not cheap, but for someone in a $500k 40-footer stuck in a campground or along the road, I think he is the next best thing to manna from heaven for them. In any case, he will know a lot about training certification options in the area. And of course if you can find a way to apprentice with someone like him, or one of the bigger shops in town, that would be the ideal way to learn.