If you want to learn horse facial markings, than here you go!
Horse Body Language
TOP LINE The line from the back of the withers to the end of the croup as seen here in this illustration of a racehorse
Horse hoof anatomy
Horse leg anatomy
Horse Side Vet Guide - Quick Reference - Equine Lower Limb Anatomy http://horsesidevetguide.com/
Mouthpieces on bits
A good guide to bits!