Hi umh. I'm pretty new to SteemIt so I'm just working it out myself. Basically it seems to take time. If you go to my blog history you'll see that it builds as I've accumulated steem power and as followers have been kind enough to upvote. I have promoted my last few posts to test it out (using SBD) and that seems to help get your posts more attention - so i recommend it for bigger posts that you put some effort into.
You're better off googling it - I'm no expert! I'm not really in it for the Steem (I chose SteemIt over Medium because I'm interested in blockchains and I wanted to test out the social media blockchain first hand). Good luck with it and let me know if you find any good tips!