Beginning Monday, CircEsteem, a non-profit that teaches circus skills to kids, will add classes for adults that include instruction in juggling, stilt-walking, trapeze, plate spinning, and clowning. The first lesson, Monday from 7:30 to 9 PM at CircEsteem’s Uptown facility (4730 N. Sheridan, 312-731-4242), is free. If you decide to register, the eight-week session will run you $180 (individual classes are $30).