In those long days before myfirstbook (see below and soon above) hits the shelves I stocked up on even more booksbyothers than I usually do in such a time span. Among them was Stephen Shore's "The Nature of Photographs" (Phaidon). An all-purpose book: for those with more than a slight and those with more than enough interest in photography; for those who tend to own only a handful of books on photography and for those who have to have them all.
Shore as a teacher. I'll borrow his last paragraph (which sounds familiar):
It is a complex, ongoing, spontaneous interaction of observation, understanding, imagination, and intention.
If you feel the same you can buy the rest here