There are two kinds of rules: rules governing play and rules governing conduct. Golf may be the only sport to include a section on player conduct in the official rules. These rules of etiquette are as important to enjoying an afternoon golfing with three friends as the rules of play are to playing the game correctly.
In other words, proper etiquette is as much a part of the game as knowing what to do when your ball gets stuck in a tree. Newcomers typically learn the rules of etiquette as they go, but we're happy to offer the crash course in on-course etiquette.