Welcome to Steemit! :) They key here with steemit is to post regularly if you can, it really doesn't seem to matter what you post, find something you would like to share and post about it! :) Also find other people's content that you like and make comments, upvotes, etc. And slowly but surely you will build up a nice blog. I am still working on it myself! and I have been here for 5 months. haha :)