That's easy: your server needs to be hooked up to Internet. Find a hosting company and rent a server there. They have the both the AC and the Internet, and probably they can do the backup of your server also.
Now what do you want to do with your own server: run your own web-application and mail server? They surely can assist you with that.
I have been online for years, even before there was a Windows, and when Yahoo was just a baby. One thing I have always wanted to have is to have my own server.
I would like information on what it all takes to own my own ISP so I could drop the isp I now have.
Is it expensive? Whats the sever hooked up to beside AC?