Can someone find your IP address through facebook? I am being threatened?

[Abby]

Ok, so I was on one of the post on the CNN facebook pages , debating politics just like everyone else. Well, this guy has gone full blast after me. He went full blown crazy. He says he knows where I live because I answered one of his chat messages. He said he tracked my IP that way. First of all, what exactly is an IP address when someone says they found your IP address, what are they talking about? My computer IP or my internet IP address, and can they find out where I live through either? Please, I am finding out different answers online and I even found a tutorial of finding ones IP address through facebook. Is this true? Am I at risk?

Thank you so much.