https://www.capableincorporated.com/
Tony pretty much teaches everything under the sun and offers private classes. Extensive real world background too.
If you are talking average gun owner (not some of the ODT pistol wizards here) I think they would be better served with more ammo and training. It's a terrible trope within the internet gun community but for the average shooters I know they need more practice to truly maximize the RMR. An Rmr...