Answer:
What has a neck but no head?
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
I am an activity involving pins flying in the air.
I have a head tail but no arms and legs.
Never resting, never still. Moving silently from hill to hill. It does not walk, run or trot. All is cool where it is not. What is it?
I am your mother's brother's only brother in law. Who am I?