Answer:
So cold damp and dark I am. To stay you would refrain yet those who occupy me do never complain.
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?
Travel a mile and I will change, travel a million and I will end as I started. What am I?
Why is leather armor best for sneaking?
I let water fall on you while everyone else stays dry.
My days are numbered. What am I?