February 11

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30 a.m.-2:30 p.m., $110. Get trained to recognize and care for victims of illness and sudden injuries and life-threatening respiratory or cardiac emergencies in adults, children, and infants and learn how to use an AED. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30-11:30 a.m., $70. Learn to recognize and care for victims of life-threatening respiratory or cardiac emergencies and to use an AED on adults. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30 a.m.-1:45 p.m., $90. Get trained to recognize and care for victims of illness and sudden injuries and learn how to administer CPR and use an AED for life-threatening respiratory or cardiac emergencies on adults. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

Verizon Wireless at Kapolei Commons, 5-6 p.m., free. Learn more about how to use your new smartphone. Pre-registration required. (vzwworkshops.verizonwireless.com/vzwworkshops)

Verizon Wireless at Pacific Guardian Tower, 2-3 p.m., free. Learn more about how to use your new smartphone. Pre-registration required. (vzwworkshops.verizonwireless.com/vzwworkshops)

Windward YMCA, 12:15-1:15 p.m., free. The Assistive Technology Resource Center (ATRC) is a great resource in Hawaii for older adults and persons with disabilities. This session will discuss the role of assistive technology in aging in place and the services provided by the ATRC. Pre-registration required. (261-0808)

Cathedral of St. Andrew, Von Holt Room, 229 Queen Emma Square, noon-1 p.m., free. Learn more about current issues and opportunities in preserving historic churches and other religious buildings from Francine Palama. (historichawaii.org)

Castle Medical Center, Wellness Center Auditorium, 6-7:30 p.m., free. Learn more about surgical and non-surgical treatment options for arthritis in the shoulder and how these options can help patients maintain higher quality of life with less pain. Pre-registration required. (263-5400, castlemed.org)

UH-Manoa’s Center for Korean Studies Auditorium, 4-6 p.m., free. Bruce Cumings of University of Chicago discusses North Korea and its effects. (956-7041)

Station Bar, 1726 Kapiolani Blvd., 8-11 p.m., free, age 21 and up. Hawaii’s longest-running open mic comedy. (mraaronpresents.net)

Pohai Nani Retirement Community, 45-090 Namoku St., second-floor club room, 12:30-1:30 p.m., free. Learn more about the Blue Zones Project from Erika Kobayashi and how the Windward region is looking to become healthier. (779-3606)

Kailua High School, College Career Center, 7:15 a.m.-3 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Central Union Church, Feb. 11-13, check website for times and cost. Over 320 high school choral singers from Oahu, Kauai and the Big Island perform, conducted by Tesfa Wondemagegnehu. (facebook.com/naleohou)

Ala Moana Center, 3 p.m., free. (alamoanacenter.com)

The Plaza Club, 5:30-7:30 p.m., free. Plaza Club Young Professionals invite the public to join them for appetizers and cocktails. Pre-registration required. (521-8905)

Windward Mall, 6-7 p.m., free. KHSPAC presents a preview of their spring musical, “Once on This Island.” (235-1143)

Check website for schedule of events and costs at UH Manoa and Chaminade University campuses from Feb. 11-14. The best of collegiate theatre gathers to showcase new approaches, innovative ideas and more, with plenty of performances, workshops and seminars for novices and veterans alike. (kcactf-8.org)