Hey! Welcome Steem!
Its preety different to other social media! To grow i recommend to use the service of @share2steem a way to share what you post on places like instagram or twitter and automatic post a replicate on your steem history!
Share2steem.io is his site and you will find the steps to configure your profile. You can earn some free upvotes provided by them!
You can also download the app of Steem to your android device. Its called @partiko and you cand find it by that name on Google Play