You don't really need to know how to control the horse, as it will follow the leader in the front. It is very easy to control it anyways, if you pull on both the straps, the horse will stop. If you want the horse to go left, just pull the left strap, if you want the horse to go right, pull the right strap. That's all you have to know. I have tried it once a long time ago, it was really fun.
The horses will run through streams, bushes and grassland, you will feel fantastic, there is no way to get through those areas except by foot OR by horse, you will feel someone is carrying you through the wilderness, plus all the horses are jogging together, it is very eye catching.