Different gaming groups will want to involve social etiquette in their games to different extents. This matter is discussed in some depth in the Core Rulebook, but for those who want to delve deeper into the fine art of social machination: here some links to extensive modern and period etiquette guides. You can use them to create the perfect ‘Modern meets Victorian’ social etiquette that works for your game and your players.
Emily Post provides the standard for 20th and 21st century etiquette.
Miss Manners is an additional source for modern etiquette.
Welcome to Victorian England provides a look at etiquette from two decades before the current Clockwork World.
The Habits of Good Society is a 19th century manual for social etiquette.