From my first gig 1981-2001 I had been a beginner in every way upwards/community center/ymca/rec/competitive rec/etc. I fell into a HC role and never did work under a lead coach. In 2001 Jack Feagin gave me the opportunity to coach with the Pistols and quickly I became his go-to developmental coach for the 12-15 age ranges. I worked with the Pistols for 11 years. Also coaching in a developmental HS league called the EMBL, as well as camps, clinics and ran an 11-week summer session school.
My "Ninja teachers" were the wiser announcers like Hubie Brown and other NBA and CBB/WCBB color commentators who explained in their telecasts what referess looked for, how not or how to do things. I also watched and broke-down the moves of the greats Ewing's fade, Olajuwon's dream-shake, MJ's step-back, Kareem's sky-hook, Payton's floater, Gervin's finger-roll, etc...I quizzed referees along the way as to what they looked for on charge-v-blocks, walks/travels etc...I studied the flights of MJ, Clyde, Kobe, Dawkins and learned from them how come they were able to do things in the air others weren't able to. I studied how they landed.
The "set" offense I ran I called the high-post. ...Once the ball gets past half-court;
5-sets up on the low-block.
4-sets up on the opposite elbow(the hi-post)
3-sets up at the arc, opposite the hi-post
2-sets up on the hi-post baseline (baseline forward)
1-is a the top of the key
From there each players has several options of movements...I've never seen this offense ran by anyone else, so I claim it as mine.
Yes I have terminologies unique to me as well as drills unique to me. They may exist as other terminologies elsewhere, but if I didn't learn them from somebody and came up with the concepts or drills of my own thinking, they were mine to name.
I run a drill called "Bang Bang" 300 shots in 300 seconds, four balls five players. No shots in the paint. (The record for this so far is 256 shots in the 5 minute duration/
I have a shooting competition called 3-2-1-50 that is also a very good game-speed movement and shooting drill
No one is fully self-taught, but the majority of what I have come up with and perfected has been on my own learning.