I agree with most people when they say "see how others do things then adapt what you need to fit YOU". You are shooting your bow. Now if there is obvious stuff like torquing the string etc then maybe someone can point that out to you a few little details, which has happened to me, but after that you have to find what works for YOU.
Three fingers under , split finger, a release, whatever you decide should be good enough for YOU then just have fun and practice lots. I don't personally think there is right and wrong, just differences. People are trying to help all the time which is good, but they just aren't YOU. You are unique. Howard Hill had things that worked for him GREAT..did the same things work for Fred Bear..Not sure, but I bet they had differences. Could they shoot a bow...darn tootin, but they didn't shoot the same did they. Maybe some similarities, but not the same for sure. They are trying to help, but we are all different.
I have seen people pick up a bow with no background and no help and shoot pretty good. Then we fill there heads with all this stuff and they can hit the barn from the inside. Keep it simple pure and enjoy the journey is all I have to say. :D
I have had people tell me to raise my elbow, turn my head, breath, hold my bow hand steady, pu tmore heel in the bow hand etc...well I was a classical mess. I couldn't do anything because my mind was so full of things to remember I couldn't do any of it.
Try to empty your mind and shoot your style the way you can do it and then there maybe the little things you can work on to improve. Too much too soon I think will actually hurt you.
Have fun...try not to over think it..get help if you think you REALLY need it.
Just my 2 cents worth which is about 2.1 cents US right now...tee hee
Jer Bear