I am basically self taught with a lot of trial and error through the years. I did some archery back when I started in scouting at summer camps in the early 70's and have always been fascinated by traditional bows and arrows. It truly is a life long journey, and while it can be frustrating at times, that is part of the beauty of the sport. I started long before the internet was available to watch videos and get pointers from other trad shooter but watching videos of other shooters can be very helpful to even life long archers IMO. I think its natural for any trad archer to experiment with his form/anchor/release through the years but you have to find what works best for you and just practice often and work on your consistency as much as possible. I don't think there is any one best answer to this riddle so to speak. I guess that is why its often called the "witchery of archery". I am a traditional split finger shooter but many people do better 3 finger under, but as I said what works best for you is the way you should go, but there are some basics that all good shooters much learn and do every time they shoot. I think the two or three most important things any newer shooter can learn is have a solid repeatable anchor point and a smooth release, and focus on the spot you are trying to hit. Aim small, miss small. Find a spot on the target and focus on it like a laser beam. Remember to follow through with the shot, which really means don't take your focus off the spot until the arrow hits the target.
I have introduced many other people including my son and grandchildren to trad archery and I get a lot of enjoyment from that aspect of the sport.
Good luck on the journey Sir.
I have learned a lot over the past few years for this man, Wolfie Hughes. His videos on Form/anchor/mental focus/release/back tension etc. are really right on the money IMO.
https://www.youtube.com/user/Wolfiesairbrush/videos