As others have said, kind of depends on how in depth you want to get. If you're trying to teach yourself how to see, and how it works in the frame, then the basics of art may be the way to go.
Some selections from painting that can give you insight into the visual language of image making:
Pictorial Composition and the Critical Judgment of Pictures by Henry Rankin Poore
Treatise on Landscape Painting by Andre Lhote
The Art of Composition by Michel Jacobs
Pictorial Composition by Michael John Angel
Notes of a Painter by Henri Matisse
Lectures on Landscape by John Ruskin
An Essay on Landscape Painting by Shio Sakanishi, Kuo Hsi