I don't know what it is you're really asking for (most likely due to my lack of sleep
) but if you are wondering about sources of inspiration and what to recommend to get the creative juices flowing.
There isn't a great or perfect DVD/Book that does this, I find my creations in trainz usually come from me just glancing at an old railway mag or even pictures on the internet and thinking to myself, "wow that would be an awesome thing to build in Trainz". I'm currently working on Lancaster - Warrington at the moment, and a lot of my fictional routes have been inspired by that little stretch of WCML.
For example, Leyland is a pretty decent station to get pictures of trains passing at speed, so I'll usually have a station on the route that trains hurtle through at 100+ MPH where you can just sit and watch them go by if you wish. One of my desolate yards is based on March after seeing a picture of a class 31 and an 08 with a brake van being the only thing occupying the entire yard.
Rather than look for big inspiration for something, just look for little snippets. You'll soon find that with those little bits here and there will progress into something spectacular.
That is of course if that is what you were asking about, three days without sleeping equals a sleepy monkeh
. If I've got it completely wrong just say and, I'll try to help out the best I can