Rachel Kramer Bussel talks to Helen Zimmermann of The Zimmermann Agency, who has experience to spare when it comes to the marketing of books. What to pitch: Memoirs, mysteries, popular culture, current issues, nature-based projects, and fiction. However, just because she'll consider a broad range of topics doesn't mean you should just commit your latest vivid dream or zany rant to paper. She values professionalism above all, and says that "projects that come in half-baked are an instant turn-off." What not to pitch: Poetry, science fiction, romance, screenplays. More information, including query etiquette, here.