Answer:
What kind of coat can only be put on when wet?
I have a head, tail, but no arms and legs. What am I?
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 a mini solar powered computer.
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
Why is the letter B always cool?