The Altadena Library hosts a presentation on LA wine history by Stuart Byles, author of “Los Angeles Wine,” exploring the area’s role in winemaking from 6 to 8 p.m. Friday at 600 E. Mariposa St., Altadena. The event includes tastings of Spanish wines. Free and open to those 21 and older. Register by emailing email@example.com. Call (626) 798-0833 or visit altadenalibrary.org for information.
Educator Paul Cummins discusses and signs “Confessions of a Headmaster,” his memoir about transitioning from a privileged kid to ivory tower scholar and progressive educator, joined in the conversation by author and activist Blase Bonpane, at 7 p.m. Friday at Vroman’s Bookstore, 695 E. Colorado Blvd., Pasadena. Call (626) 449-5320 or visit vromansbookstore.com.
Guitarist and composer Joe LoPiccolo performs at 7 p.m. Saturday at redwhite+bluezz, 37 S. El Molino Ave., Pasadena. Free. Call (626) 792-4441 or visit redwhitebluezz.com.
A free, two-hour backstage tour of the Alex Theatre offers a behind-the-scenes look at the historic venue beginning at 11 a.m. Sunday at 216 N. Brand Blvd., Glendale. Call (818) 243-2539 or visit alextheatre.org.