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.
You write on me and secrets I can keep. In places never seen. I spin like a top. Though stiff as a board I'm often described like a mop.
I am an object which is used in baseball during the day I can't be seen at all
Six letters it contains. Take away the last and only twelve remains. What is the word?
I've been around for millions of years, but I am no more than a month old. What am I?
Give it food and it will live, give it water and it will die.