Well sit back heels down or hold on with one hand on the horn and the other with the reins....
in a stable
You should be in-balance with the horse to begin with. If the horse jumps 'big' try to stay with the motion and possibly grab some mane or if you use one, a neck strap on the horse. It's not always possible to stay put however so you should practice how to safely fall from a horse.
in a stable!!! often in farms
in your horsebox
Stay away
The Horse That Wouldn't Stay Hitched - 1913 was released on: USA: 31 January 1913
In Wild West island you put your mouse over the horse and it'll say something like ride horse or dismount horse.
saddle
11months
dock
It's fast
Don't fall off.