The single finest book om horses I have ever read is "the Schooling of the Western Horse" by John Young. Published by University of Oklahoma press, it's now out of print, and if you see a copy I don't care if it costs you a weeks wages, get it. It's not a western book, despite the title, or an english book, but a book on getting inside the mind of a horse and being a horseman. . . .here's a listing on amazon. http://www.amazon.com/schooling-western-horse-Richard-Young/dp/B0007IUPFA