I think there's a subtopic that may be interesting to many. That is who is your most influencial "teacher" of photography.
The art side of my experience was begun by attending workshops in the late 60's early 70's. They include AA/Alan Ross & John Sexton. I am an unabashed Weston fan.
But my favorite teacher of "technique" was the late Fred Picker. The cool thing about Fred was if he found a nuisance problem, he had a device invented to solve the problem. dry down, just dial in 3-5%(paper dependent). Cool light head output varing with voltage, build a stabilizer. My whole darkroom is populated with Zone VI equipment. Some really bright guy (I think from MIT?) worked with him to solve darkroom issues. He was one hell of a printer.
I am fortunate to live 15 minutes from the Amon Carter Museum, one of the more photo-centric museums in the country. My kids grew up, being in tow being exposed to the great American photographers. The Porter permanent collection is located there. The Avedon exibit, the American west, is there now. Impactful.
In some ways, Michael is the current Picker, in that his greatest influence is the imparting of information to many.