You need a recommendation from either a trainer or an owner to get a job on the racetrack. This means you'll cool down hot horses that have just run or exercised. Walking hots is done from the ground. Move up to grooming. Once you've established yourself on the racetrack, you can become a groom.
Grooms are typically responsible for grooming three to four horses.
The groom is responsible for making sure the horse is brushed, cleaned and ready to ride. This gives the racehorse exercise and gets him used to being ponied, which is how the racehorse enters the racecourse. You finally get to ride the racehorse, but only for exercise. You'll be required to gallop the horse on the track for practice. Compete in schooling races.