Started out at age 5 with a bow & arrow, Grandpa taught me basic and advanced ballistic theory with Archery.
Cannot emphasize enough how much that helps later on...especially with a .45-70 or a super-blooper
At age 12 with a Ret. Marine instructor (Grandpa again) who first showed me how good HE was with a rifle...
he set up a few jugs of water, loaded his M1 Garand, and busted them all, one shot each at 200 yards...
then he looks over at me with what I can only describe as Hard-Corps Grandpa and said,
"If you ever screw up the family name, consider yourself as one of those targets. Now we begin your Instruction."
Which, if nothing else, made me a somewhat more careful & selective teenager
Note: If you run across an old guy with a gun he's been shooting his whole adult life, try not to become one of his targets
The rest of the formal training occurred during service with the Navy, and then Army, then personal training.
This is also a great reason to have multiple weapons...so there's always something new to work with...
keeps interest alive, yet you are still practicing the basics regularly!
Its what one has to do to stay sharp!
Hrm...that reminds me...anyone remember the old Shotgun Range at NAS Memphis??
Best training ever received on moving targets occurred there!!