The third annual Boston Book Festival (the largest literary event in New England) is this Saturday (October 15) in Copley Square. The event will host more than 100 world-renowned authors, workshops and events. If you are in the city, check out the festival.
Whatever your interests, fiction, history, science, food writing, sports writing, crime fiction, etc… they have something for you. You can check out the full calendar of events by linking to their site here and individual event descriptions here.