What is steem?
steem is a concurrency.

it's very easy to earn you can blogging here for earn SBD or steem. you can buy too. there have many users. https://steembottracker.com will help you to earn lots of SBD or Steem on low cost. (if you need to know all about it comment here.) i will help you.if you need check your voting power go here> https://steemnow.com write your username and press enter.

how much vote good for one day?

the answer is 12 vote. if you vote one person your vote value will degrees -2% . if you 12 vote every day your vote value will -12%. 24 hour it's need to fill up.