TrainPlayer
If you enjoy model railroads, classic track plans, and computers, www.TrainPlayer.com is the right place! TrainPlayer offers bold new adventures in mouse-driven armchair model railroading. Designed for the railroader who studies track plans and dreams of an empty basement -- with TrainPlayer you can dream and run trains!
SpookShow TrainStuff
Go visit SpookShow TrainStuff and get lost in the model railroad process. I stumbled onto this site kinda by accident while looking for N-Scale stuff. I found an N-Scale Locomotive Encyclopedia here and then a fantastic blog covering YEARS of model railroading. Excellent reading for someone seriously thinking about building one, whether for the very first time, or after several attempts, successful or not. The blog is FULL of helpful hints and tricks, along with plain 'ol logic that would help even the 'Model Railroader Pro' from time to time.