Guides are good if you can get people to read them. The biggest problem I've found when it comes to roleplay though is that people don't know what roleplay is. Usually ends up being a drama fest and popularity contest between the players. Lots of "I want to be the hero" types.
You just have to get it into people's heads that they're involved in a collaborative writing project more than just a "if I lived in this universe."
But you may already know that.
Screenshot looks awesome though. Wonderful attention to aesthetics.