How to earn?
First register for an account on Steemit, now when you post Questions, Answers or upvote other entries you are earning Steem money, that simple!
If i'm only want to place a question and i don't have an account?
No problem, go to any category/tag and post it, we can send it to steem blockchain for you. You can get answers, but you can't comment and don't earn any Steem coin from this. All earnings from your questions stay on the network users.