Answer:
What has a bottom at the top?
I am black white and read all over.
I can be cracked made told and played.
What is light as a feather but even the strongest man cannot hold it for more than a few minutes?
I am born in fear raised in truth and I come to my own in deed. When comes a time that I'm called forth I come to serve the cause of need.
No matter how little or how much you use me, you change me every month.