Zan, City Cowboy
Zan, City Cowboy is free and is a good place to start reading the seven books in the My First Horse series. Located in the middle of the series, you can watch him grow along with Tika, the filly he helped birth. From there, you can go back to the beginning where Nick learns to ride Prince at Camp Wa-Tonka. Later, working at Shamrock Stables, Nick is blown away by Trace, a retired cutting horse.