Daryl, great question. I use resource leveling often and learned it myself. Unfortunately real documentation is pretty light because of the real or perceived complexity of resource leveling lack of common use. I found that using resource leveling effectively is a combination of knowing the engine and proper usage. I did an MPUG webinar back in 2009 that might be recorded. I also did a three-part series in June 2014 “Managing a resource constrained project” that describes my setup and execution process using resource leveling. Outside of a basic internet search I don’t know where you can find good documentation. Hope that helps.