Starting out, it seems like friends who have liked our page are the only ones interacting. So I would definitely suggest inviting all your friends to like your page, if you haven't already. Other than that, the things that seem to work best for us are asking questions & hashtags. I'm just glad I have a daughter that is more comfortable with this stuff than I am to help me out, and teach me.
Also, check out shop link ups on Facebook (like Handmadeology).