I want to apologize if I butcher any terminology or if I seem overly naive. I never had a model train as a kid, so I don't really know the lingo. But, anyways, the company that I work at has recently moved into a new, snazzy building. Surrounding about half of our office is a small catwalk. The catwalk is about 10 feet off the ground, about 1 and a half feet wide, and about 200 feet long. The catwalk is fully decorative, but we thought it'd be great if we could get a model train running on it. Unfortunately, none of us know the first thing about model trains and after looking a little bit on the web for more details, we were left at a little bit of a loss on how to start. If we can convince management that this is a good thing to do, the money for the trains will probably come out of our own pockets. So I'd prefer not to have to spend that much money up front if it can be helped. So, anyways, I had some questions. Where do I start? Like what size train would be a good size? If you look at the pictures, there is a piece of cable holding the catwalk up, how would I make sure that the train isn't too big? Am I going to have some issues wiring this all up? Any gotcha's I should watch out for? Where can I go about getting relatively cheap tracks that would be pretty long? In general how much is this going to set me back? I thought it'd be coolest to have the track a complete loop so we could put more than one train up there... about how much space will I need to have the trains be able to turn around? Trains... Track... is there anything else I'm missing that I'll need to look into? Any hints about the more hackable items? The long term plan would be to have some kind of webcam or something on the train, so I don't want to paint myself into a corner if there's a direction I can go now that'll make that task easier in the future Pretty much what is going to go wrong so I can try to prepare for it Thanks a lot!