The three topics are
Effective tags: this topic helped me alot. I clicked on the link sent, and since then wherever I want to post on my blog, I look for my tags from the link.
Who to follow on steemit: you told us to follow people who are very influential in steemit. I unfollowed those I know have less power on steemit and I started following people like @jerrybanfield, @adsactly etc.
Steemit bot that are used to promote posts: have been using this to promote most of my post.