Classes and events are free, but advance registration is required; call 324-4345 to register. Thursday, Oct. 10, from 5:30 to 6:30 p.m.: "Physical Medicine for Neck and Back Pain Management," Dr. Scott, Goorman. Tuesday, Oct. 15, from 10 to 11 a.m.: "Poison Prevention and Medication Safety," Liz Barta of the Arizona Poison and Drug Information Center.