This is not a great work of nonfiction: it’s a quickly-written ode to Emily Post, with updates for the modern era. And it’s passable, for the first few chapters. It takes a turn at Chapter 7. Maybe the copyeditor stopped there, or another author swapped in, and at that point the number of grammar and style errors skyrockets. The effect is worsened by the prose, which, in the pattern of Post, goes over the top with its old-fashioned turns of phrase.