Right on this site you can go to:
http://www.trains.com/mrr/default.aspx?c=ss&id=16
This is a section called the ABC's of Model Railroading. It's in a section under the Model Railroader Magazine banner. Just scroll to the bottom of this page and click on "Model Trains" next to the word "Newcomers." There's more info there for you to look through.
Also, the National Model Railroad Association (NMRA, an abbreviation you'll see quite a bit) has a beginner's page:
http://www.nmra.org/beginner/
You also may want to look around your area for a model railroad club. Many of these have open houses in November, which is National Model Railroad Month. Go to the open house, talk to the members, and you may be surprised at how open they are to "helping the newbie."