Answer:
I am commonly abbreviated to H
The more you take of me the more you leave behind.
I am a kind of coat that can only be put on when wet. What am I?
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams dreamt my merest touch brings laughter.
I go from house to house a messenger small and tight. Whether it rains or snows I sleep outside at night.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.