Inviting someone on steemit

Good morning , I have been so impress with steemit, that I have been yapping left, right to whoever would listen. I have a handful of friends interested and I do not think we have something like "invite a friend to steemit". Or do we? I had the privilege of my father setting me and helping me introducing myself.
Well today, my goal is to help 2 of my friends setting their account! Woot woot!