Start with high-confidence fishing books, then narrow by subgenre or adjacent topics.
Catch a Better Life
Jimmy Houston
The Yellowstone Fly-fishing Guide, New and Revised
Craig Mathews, Clayton Molinero
Catching Hope
Pete Nunnally
The Little Book of Incredibly Useful Knots
Geoffrey Budworth, Jason Dalton
The Salmon Sisters: Feasting, Fishing, and Living in Alaska
Emma Teal Laukitis, Claire Neaton
Rivers Always Reach the Sea
Monte Burke