Though I've not actually started construction, I've come across a number of really good resources for ideas on other blogs and sites I've been following.
One of the more active ones is Greg Amer's Industrial Lead; I've been enjoying the posts about creating high-quality handlaid track. Very good and detailed information even if I don't make the leap all the way to Proto87.
Also, Charles Hostetler's CNW in Milwaukee is another of my favorites, firstly because his modeling efforts are on Milwaukee, so I can relate to the locations, and secondly, he does deep and thorough research. The series about the prototype waybills is interesting to follow -- A late model railroader friend of mine had created software to replicate those waybills and some of the car routing associated with them.