The 3rd annual Boston Book Festival is on Saturday, October 15th. It will include a street festival held in Copley Square (right in front of the Boston Public Library), as well as a series of panels held in the surrounding buildings. All admittance will be free, though you can purchase tickets to reserve a seat for some of the more popular panels. I’m planning to attend the Far Out Fiction panel, though with 33 options there should be something for everyone.