lol
it's easy, the _most_ important setting is making it a private server, so that it doesn't connect to the _master_ server that will make your server public and will be listed in that big server list 😛
Just run it and let the window open, then open your emulator, start the kaillera mode, insert a nickname (connection: good is the _best_ setting, unless you are going to play on a lan), and then click "Enter IP" and connect to the server's ip.. you'll end up in a lobby 😉