Ride

You can climb onto a riding animal and stand a good chance of getting where you want to go without falling off, being thrown or having anything else unpleasant happen to you.This Skill can also be combined with Mental Stats to reflect your working knowledge of the relevant trappings and equipment.

0: You can't even get in the saddle my guy. Don't. Just don't.
1: You can ride a horse without falling. Too often.
2: You can ride a horse at a brisk pace.
3: You can ride horses through difficult terrain.
4: You could be a professional horse jockey.
5: You're probably a member of the Sky Corps.