Answer:
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
I must be broken before you can use me. What am I?
We applaud if you perform well.
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see. What am I?
My seas have no water, my mountains have no rock, and my land has no grass. What am I?
When is it bad luck to see a black cat?