From what I have seen to be successful on Steemit is to be consistent and post every few days. Engage with the community in comments, upvotes and replies. Introduction posts are good, I find once you have a small following you will get more comments and upvotes.
Best of luck with your book.
Thank you so much, currently navigating the different groups and forums! This is a wonderful platform, just trying to find my way! :) Thank you!!