HAPPENIN’ OTSEGO for THURSDAY, APRIL 18 Tai Chi For Arthritis TAI CHI – 10-11 a.m. Tai Chi for Arthritis classes for ages 60 and older. Free, donations accepted, registration and commitment to a minimum of 11 classes required. Meadows Complex, 140 County Hwy 33W, Cooperstown. 607-547-4232.…