How Can I Make The Best Out Of Steemit?

Hi Steemians. I am being curious about the best way to make something good out of steemit and I've got some questions that need answers.

1. How often can I post on Steemit?
2. What is Steem power?
3. What can I do with Steem power?
4. How often and what's the best method to upvote, comment, and share on Steemit?
5. How can I gain more followers?
6. How can I upload a Video and what is the maximum size to be uploaded?
7. What's the best practice to secure my Steem account and wallet?
8. Is there any rules to be observed on Steemit?
9. How can I make the best out of Steemit.
10. What is Estimated Account Value?

Please everyone, I dont want you to see this as a dumb question. I'm the curious type and I love asking what I dont understand and I would really love to see people shedding light to this, thank you.

Note: Kindly vote, resteem, share or comment, thanks.