Copperfield's Books in Petaluma, Calif., kicked off the book tour for Mac Barnett and Jon Klassen's The Three Billy Goats Gruff (Orchard Books) on Saturday with a few hundred fans and three baby goats. After meeting a lot of the crowd, the goats took up residence in the store's front window, offering perfectly timed bleats during the reading of the story, and then meeting with the authors and kids events director Patty Norman for a more in-depth conversation.