Start with high-confidence photography writing books, then narrow by subgenre or adjacent topics.
The Lay of the Land
Joe Greer
The Street Photographer's Manual
David Gibson, Matt Stuart
Extraordinary Everyday Photography
Brenda Tharp, Jed Manwaring
Humans
Brandon Stanton
STILL
Mary Jo Hoffman
Richard Misrach on Landscape and Meaning
Richard Misrach, Lucas Foglia
Strange Hours: Photography, Memory, and the Lives of Artists
Rebecca Bengal, Joy Williams
The Picture Not Taken
Benjamin Swett
The Essence of Photography, 2nd Edition
Bruce Barnbaum
Joel Meyerowitz
Paul Nicklen
Blind Corners
Michael Collins, Will Self
Photographing Civil Disobedience
Avrati Bhatnagar, Sumathi Ramaswamy