The Nook, a bookstore and gift shop on Gloucester Main Street, is opening its own café. Beginning Saturday, customers can purchase a 12-oz. hot beverage or a 16-oz. iced drink while they shop and browse. The coffee and tea bar will be self-service, and muffins will also be available. In addition to a table and chairs inside, The Nook is also adding seating outside. Here, owners Mark and Julie Garrenton show off their new café area....