Are you ready setting up your own server? Then let's go!
At first you should evaluate if you gonna fool around and play a bit using a virtual server on your pc and then start with a "real" server or if you go for it and use a "real" server in the first place. Just one warning: A server avaiable from the internet who is not set up properly can be used by spammers or bot-networks resulting in legal issues! Be ware of this when you decided to rent a server!