1. “Rip It Up and Start Again” February 28 at Mo Pitkin’s, 34 Ave. A, nr. 2nd St.; 212-777-5660, $8An excellent panel including music author Simon Reynolds (whose book gives the evening its name), no-wave pioneer James Chance (of the Contortions), and Steven Daly (drummer for the influential band Orange Juice) discusses the musical and artistic synergy of the punk and post-punk eras.2. Marvin J. Taylor and Lynn GumpertFebruary 23 at Makor, 35 W. 67th St., nr. Central Park W.; 212-601-1000, $16In The Downtown Book: The New York Art Scene 1974–1984, Taylor and Gumpert chronicle one of the great eras in the city’s art history.