Cheap$kate: The best FREE events in New York City

Melissa Joan Hart signs copies of new memoir and 'Explains It All'

From teenage witch to TV mom, Melissa Joan Hart has appeared on the small screen for most of her life. Now, the actress and real-life wife and mother dishes on her experiences both on and off the screen in "Melissa Explains It All." Catch Hart at Barnes & Noble tomorrow evening, and perhaps you'll also fall under her spell. (Tomorrow, 7 p.m., FREE, B&N Upper East Side, 150 E. 86th St., 212-369-2180, bn.com)ART

Notched Bodies: Insects in Contemporary ArtInsects provide inspiration for many artists. Join four artists Wednesday to hear how insects impact their works. Then stick around and join artist Brandon Ballengée as he searches for insects around his outdoor sculpture. (Wednesday, 6 p.m., FREE, RSVP at artandantiquities@parks. nyc.gov, The Arsenal Gallery in Central Park, 64th St. and Fifth Ave., third floor, 212-360-8163, nycgovparks.org/art-and-antiquities/arsenal- gallery)