If you are new to Twitter, this is what you do.
1) Go to http://www.twitter.com
2) Setup a free twitter account if you don't have. You just input the information on the right and click "sign up". You can input some additional info later like your cell number but that is not required. You can just use twitter for the web. I recommend you use your VandyMania handle for twitter if it's available but that's up to you.
3) Now navigate to http://twitter.com/#!/VandyManiacom and click on "Follow". You are now following VandyMania.com. You can also follow many other twitters that follow Vanderbilt athletics, recruiting and the SEC. You can easily unfollow them if you decide to later. Make a bookmark to your twitter feed and you'll be able to instantly find all kinds of updates on the Commodores (some from the Commodores themselves) via VandyMania and other sources. All the twits from the twitter accounts you follow will come to your own twitter page. You can even tweet yourself if you find out some juicy piece of information and some might decide to follow you! Share interesting tweets you find here on VandyMania for discussion.