Tough one.
1) 24 hours Mid south shooting institute - hand gun. John Shaw's School.
2) 8 hours Mid south shooting institute - shot gun, tactical, defensive.
3) 80 hours US, Service rifle competition. Mostly Garands and the M14, some Ar15, but the basics apply to all rifles. This is iron sight use.
4) 2 hours US Marine corps, Marksmanship Unit, pistol, Bullseye matches with the 1911 and M9.
5) National range officers institute, 16 hours, became Chief range officer.
6) NRA, basic pistol marksmanship instructor.
7) NRA firearm safety instructor.

NRA handgun personal defense instructor.
9) Texas hunters safety course instructor.
10) Self designed home range, range officers instructor.. Basically everything I learned at the NROI, plus real life experience, to train my home range officers.