After watching this short clip, upvote the post with the arrow next to the $ sign.
Now, in the top left corner click Steemit beta and notice what is trending.
The column on the right lists categories of interest.
You will want to have an account and start moving away from FB.
Bring your friends to Steemit by sharing a post you create like I did.
Look at some of the "introduce yourself" posts, for inspiration.