We have changed how we collect and accept calendar information. Readers must now submit all items through our website. Go to events.contracostatimes.com. Click on "submit your event." You'll have to register at this point, and enter your event. You do not have to pay. Submitting your event in this way will ensure it is part of our easy online searchable database, as well as a candidate for space in our publications.

Cycle of Change Bike Drive. Got an unused bike or one that might need fixing? Donate your old bicycle to Cycles of Change, where they'll fix them up and return them to the community. Volunteers also needed. 10 a.m. May 24. Main Library, 125 14th St., Oakland. 510-238-3134, www.oaklandlibrary.org.

Celebrating Elephants Day. Oakland Zoo's annual Celebrating Elephants features as gigantic pachyderm bones, an 11-pound tooth, and more. Also, it's the once-a-year opportunity to tour the elephant barn and see an elephant up close. 10 a.m. to 3 p.m. May 24. Oakland Zoo, 9777 Golf Links Road, Oakland. Zoo admission required. Elephant Barn Tours $10 adults, $5 kids. 510-632-9525, www.oaklandzoo.org.

Computer Assistance. Ready, Set, Connect computer tutors will be on hand to help youth learn technology-based job skills. 1 to 3 p.m. Saturdays and 4 to 6 p.m. Tuesdays. Free. Oakland Library Rockridge Branch, 5366 College Ave., Oakland. 510-597-5017, www.oaklandlibrary.org.

Author Yuyi Morales. Award-winning children's book author and illustrator Yuyi Morales stops by the library to read her work, and talk about her personal history and Mexican children's folklore. 6 p.m. May 27. Cesar Chavez Branch, Oakland Public Library, 3301 East 12 St., Oakland. 510-238-6706, www.oaklandlibrary.org.