actually, the more technical the better. he best photographers, through experience, can run through a mental checklist a mile long as they size up all the emelents in the challenge. so.. the best information often is technical in nature, then applied at the creative instincts of the artist to pick/choose how they are represented.
Thats just my leyman's .02 cents, how I approach the learning, apprenticeship and knowledge transfer of those who 'know".. Until Im in that category. I will follow the golden rule.. 'Fake it till you Make it!"