I need help on portal 2 co op. HELP ME!

Okay its come time for us to have a server. Our OWN server. So if anyone can help me or create the server that would be great!

Hey there guys, i know that right now we have a small group, but if you could invite some more people into the group, then maybe we can finally try to have an event. But its your chocie where. I was thinking mainly tf2. So yeah, ask people to join, friends, family, etc.