Big Magic:  Creative Living Beyond Fear by Elizabeth Gilbert
2015

An inspirational book that may give you new ways to look at your approach to creativity.

Landscape Painting Inside and Out by Kevin MacPherson
2006

This is a good basic book for plein air painters.  It was recommended  by Michael Chesley Johnson before taking his plein air class in Campobello, Canada. 

Color and Light:  A Guide for the Realist Painter by James Gurney

2010

There is so much to learn in this book and the artwork is phenomenal.  If you like the book you might be interested in Gurney’s blog, Gurney Journey.