I learned the basics of exposure in one afternoon as a pre-teen boy, so I have never,ever understood the need for a book about "exposure" except Minor White's "The New Zone System Manual". I started off with a 1950's-made KOdak 35mm camera with adjustable lens and no light meter, and soon bought a General Electric light meter, then when that died, a Weston Master II meter. So, exposure, that's literally kid-stuff. Camera's today have built-in meters!!! I then started reading the Time-Life library of photography series of books, as well as The Amateur Photographer's Handbook. And then every single book on photography in my school library,and my town's library. At age 13, my sister got me a subscription to Modern Photography magazine,and I read that and Popular Photography regularly, then at 17 my boss gave me The Encyclopedia of Photography, as well as 10 years' worth of back issues of Pop,Modern, and The Rangefinder magazine.
I spent the ages of 10 to 18 interested in photography as a hobby, but when I got to college, I studied photography in the fields of science, journalism, and fine arts. it wasn't until I began studying fine art that my photography really began to improve,and I was able to see bad composition and poor framing and lousy photography and recognize how to avoid it. I learned a lot of practical and how-to and technical stuff from books and magazines, but the fine arts classes were what really helped me. I then studied the history of photography, as well as fine-art photography. Later, I was trained as a studio portrait photographer by two different people. Today, the web is my most frequent reading room, and the bad thing about it is I see a LOT of half-baked people doing video presentations and talking out of their asses. It's shocking to see the number of newbies who are presenting videos,and along with the videos, are presenting very weak or even erroneous technical "explanations", and making stupid suggestions. Without peer review, or the filter of editors, some of the stuff on YouTube is just flat-out BAD information.