While trying to explain the mechanics and pecularities of solar imaging to a friend who does DSLR photography, I stumbled across this tutorial below the other day. I think it may be one of the best resources for explaining how solar observing and solar imaging work, covering the basics from observing safely to solar image capture fundamentals.
"Introduction to Solar Imaging" by Rupert Smith of Astrograph
https://astrograph.n..."Solar Imaging"