FRIDAY

On the town

Rock and beyond: Musician, photographer and safe-energy activist Graham Nash, of Crosby, Stills and Nash fame, talks about his autobiography, “Wild Tales: A Rock & Roll Life.” [7 p.m., Nourse Theatre, 275 Hayes St., S.F.]

SATURDAY

A great bike event

Richmond District Family Bike Safety Fair: Join the San Francisco Bicycle Coalition, Presidio YMCA, YBike and Assemblyman Phil Ting for a fun-filled family biking fair. Bring your kids and their bikes to the free event, which features a bike obstacle course, bike tuneups, safety tips and a Freedom From Training Wheels class to teach little ones to bike. [10 a.m. to 2 p.m., Roosevelt Middle School, 460 Arguello Blvd., S.F.; www.sfbike.org]

Ferry Plaza Farmers Market top picks

Cardoons

Bok choy

Broccoli di Cicco

Buttercup squash

Collards

Early Girl tomato juice

Meyer lemons

Radicchio

Smoked fish

— www.cuesa.org

Community

Health fair: The Growing Healthy Kids Fair is a free event with activities, food tastings, health and dental screenings, and physical activity opportunities for all ages. [9 a.m. to 1 p.m., City College of San Francisco, 1125 Valencia St., S.F.]

Literary arts

Mystery novel: Author Ellen Kirschman talks about her debut novel, “Burying Ben,” a mystery inspired by stories she heard as a police psychologist. [3 p.m., Borderlands Books, 866 Valencia St., S.F.]

Theater

Civil-rights story: Theatre of Yugen presents Kevin Simmonds and Judy Halebsky’s “Emmett Till, a River.” The show tells the 1950s story of the murdered black teen. [8 p.m., Noh Space, 2840 Mariposa St., S.F.]

Lectures

Geology talk: Ken Lajoie, a geologist retired from the United States Geological Survey, gives a talk exploring the origins of San Francisco Bay. [1 p.m., San Mateo County History Museum, 2200 Broadway, Redwood City]

SUNDAY

A great hike

Million-dollar view: You think today’s millionaires in San Francisco are transforming the city? Go back to the 1880s and check out Adolph Sutro’s résumé: mining engineer, mayor of San Francisco, millionaire and developer of Sutro Heights — one of the best places in The City to catch the sunset. [Visit WeekendSherpa.com to find out more about getting outdoors in Northern California]

Fairs and festivals

Financial fair: The Art of Financial Well-Being Resource Fair features workshops on financial fitness. Themes include the Affordable Care Act. [11 a.m. to 4 p.m., Jewish Community Center, 3200 California St., S.F.]

Music

Local symphony: The Bay Area Rainbow Symphony performs music by Mendelssohn, Britten and Kenton Coe. The event is part of the Britten centennial celebration. [4 p.m., St. Mark’s Lutheran Church, 1111 O’Farrell St., S.F.]

Boogie-woogie show: The Golden Gate Blues Society presents its first San Francisco International Boogie Woogie Festival. Pianists from across the United States and Europe perform. [4 p.m., SFJAZZ Center, 201 Franklin St., S.F.]

Variety

Moon lit: Lunada, a literary lounge and open-mic night held during the full moon, presents its latest edition. Guests include dance artists Amara Tabor-Smith and Jose Navarrete. [7:30 p.m., Galeria de la Raza, 2857 24th St., S.F.]