What to do locally this weekend
• AJC Decatur Book Festival, Aug. 30-Sept. 1, on the square in downtown. • Decatur Sheryl Crow, free 2013 Kickoff Concert, Aug. 31 at the north end of Centennial Olympic Park, Atlanta. Gates open at noon. • Advocare 500, 7:30 p.m. Sept. 1 at Atlanta Motor Speedway. • Art in the Park, Aug. 31-Sept. 2, Marietta Square. • Everyday Heroes celebration, Aug. 31-Sept. 2 at Stone Mountain Park.