I'm 16 years old and I've been riding almost 6 years and I've been training beginners on horses for 4 years.
If you need a horse trained I can refer you to a friend of mine. She is very good. She starts the horse. They get plenty of trail miles put on them, they learn to stand tied and stand for being tacked up.
My first student I taught got 3rd place in a horse show against older adult riders and bigger horses. She was 6 years old and is now 9 years old and still riding.
This girl was riding a 14.3hh grade mare.