Welcome from the Deep South... So South that must everyone is from up North!? The others have given most of what I was gonna say. Other than, read, read, read, think, think, and read. Start small. Do a scene on some board (even the foam from a monitor/TV packing). Get the feel... See if you want to watch'em, switch'em (play), or both. Than you get into location, but seems you mentioned PRR... So you got that. Good luck! ..and we's here for questions!