Like posted above, trying to nail down a "comprehensive guide" is probably going to be very difficult. Even things like reserve and upgrade times are constantly in flux depending on hiring and attrition rates as well as fleet plans for growth and reduction of flying.

Try to narrow down your questions beyond "what's the QOL like" or "what are the work rules" at the regionals. Specific questions about particular airlines are better suited- "Does Comair have min day guarantees" or "What is the maximum number of hours you can work in a day/trip/month/year at Republic?"