The art of behaving among the fine folks is called etiquette. It's a set of strict social rules and many hidden cues are involved in it. Knowing this skill means knowing how to address people properly, what vocabulary to use and sense which topics may be discussed. It's also how to behave at a banquette or dinner and how to get what you want among the finer folks of the world.
If you wish to find your way and maneuver the dangerous world of the criminal elements, look to .