Emergency training Pleasant Hill Community Emergency Response Team (CERT) six-week class starts 6 p.m. Sept. 15, Pleasant Hill Adventist Academy, 796 Grayson Road, Pleasant Hill. For residents 14, older. Learn disaster preparedness, fire safety, light search and rescue, more. Disaster simulation Nov. 1. Apply at www.ci.pleasant-hill.ca.us, www.pleasanthillcertsignup.com. Dan Connelly 925-288-4633; Jim Bonato 925-938-5433.
Book giveaway Contra Costa Library book giveaway 9 a.m.-5 p.m. daily, except Sundays, through Aug. 30. Used books no longer needed in collection free to public. Located at library administration in shipping parking lot, 75 Santa Barbara Road. Bring own bags or boxes. www.ccclib.org.
Onstage show Onstage Repertory Theatre Company's "Beau Jest" Aug. 22-Sept. 7, Campbell Theatre, 636 Ward St. Martinez. Shows 8 p.m. Fridays-Saturdays; 8 p.m. Aug. 28, Sept. 4; 2:30 p.m. Aug. 28, Sept. 7. $18 general, $16 seniors, $10 students. Thursday shows $12 (except students). 925-518-3277.
Pleasant Hill Dolfins 50th anniversary events. Former team members, families welcome. Cocktail party, 21 and older, 8-10 p.m. Aug. 22, Wence's Restaurant, 1922 Oak Park Blvd. Swim meet, barbecue lunch 11 a.m.-5 p.m. Aug. 23, Pleasant Hill Education Center Pool, 1 Santa Barbara Road. Tickets 925-682-0896. www.eventbrite.com/e/dolfins-50th-anniversary-reunion-tickets-10492857419.
Be an English tutor Diablo Valley Literacy Council needs volunteers to tutor adults in English. No teaching experience, English need not be first language. 9 a.m.-1 p.m. Sept. 6, 13, Good Shepherd Lutheran Church, 4000 Clayton Road, Concord. Nominal training, materials fee. dvlc.tripod.com. 925-685-3881, DVLC4ESL@gmail.com.
Symphony openings Contra Costa Wind Symphony openings for performers on different instruments: French horn, tuba, percussion. Duane Carroll, www.CCWindSymphony.org, click "contact" link.
Book sales Friends of Martinez Library Bag of Books sale 10 a.m.-4 p.m. Sept. 6, Martinez Library, lower level, 740 Court St. 10-11 a.m. members only; can join at door. Fill grocery sack $5. 925-646-9900. Friends of Pleasant Hill Library book sale 10 a.m.-3:30 p.m. Sept. 13, in parking lot behind Pleasant Hill Library, 1750 Oak Park Blvd. Free e-waste drop-off. 925-646-6434.
Tarantulas on move Learn about California tarantula 6-8:30 p.m. Aug. 24. Moderate three-mile, two-hour Mount Diablo. Bring water, snacks, camera. Mitchell Canyon Picnic Area, Clayton. $6 per car. Reservations www.mdia.org.
Friday Night Swim Final Friday Night Family Swim of season 6-9 p.m. Aug. 22, Pleasant Hill Aquatic Center, 147 Gregory Lane.
Breast cancer benefit Pink Turn-A-Thon benefits breast cancer awareness 9 a.m.-2 p.m. Aug. 23, Rockler Woodworking and Hardware, 541 Contra Costa Blvd., in Pleasant Hill. Instructors guide beginners in wood-turning pens for Susan B. Komen Foundation for fundraising. 925-521-1800.