3 books · Ages 5–11 · Chapter Books
Usborne Introduction to Horses and Ponies is a 3-book series for ages 5–11 by Lucy Smith. Each book stands alone — start anywhere.
Start anywhere — each book stands alone.
That said, Horses and Ponies and The Usborne Book of Horses & Ponies are great first picks.
No particular order needed — browse and pick what catches your eye.