Attendance to one of Bernie Pellerite's courses would help you with learning and passing on proper form. It's costly, and you'd have to travel to where ever he is doing them. Unless you could get a local archery club to sponsor him coming to your area. You can find information about him thru the National Archery Association (N.A.A.) or National Field Archery Association (N.F.A.A.).

Easton and PSE, both, used to have courses you could attend to learn the mechanics of bows and other items. Maybe other manufacturers do too. I'd suggest at the very least, you consider what brands you want to carry, then contact that manufacturer about any workshops they have to teach about the intricasies of their own bows. Some things are basic, some aren't.

As you can see, it can be quite costly when you consider attending three or four workshops (usually at different areas of the country). But I believe the best of the best pro-shops make this effort.

Good luck in your endevours, and remember, customers will usually pay a little more for products if the service is top notch! Service, knowledge, and committment, is what brings customers back.