User blog:Hegotaway/Multi-player..BUT HOW??

So me and My roommate just moved back to our persective homes and dont see eachother that much any more. We want to play multi player but have no clue how. Can someone give us a walkthrough or something. I have no clue how to set up servers or anything so if there is an open server that would be awesome as well.

Please and thank you!

Love!