July 23

State Capitol, 4-6 p.m., free. Hawaii Bicycling League begins the rollout of the Biki bikeshare program with workshops on bike safety, etiquette and demonstrations. Pre-registration required. (hbl.org/bikibasics)

Castle Medical Center, 4:30-6 p.m., $25/two people. Pre-registration required. (263-5400, castlemed.org)

Kagyu Thegchen Ling, 26 Gartley Place, 2-4 p.m., $10/donation. Khenpo Tsultrim Lodro discusses Tibetan Buddhism. (luminouswisdom.org)

UH-Manoa’s East-West Center Gallery, 2-3 p.m., free. Learn about how Rapid Ohia Death threatens Hawaii’s own “tree of life.” (944-7177, arts.eastwestcenter.org)

Calvary by the Sea Lutheran Church, 8 a.m.-1 p.m., free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Mililani Market Place, 7 a.m.-noon, free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Waikele Center, near Leonard’s Malasada Truck, 7 a.m.-noon, free. Donate blood and save lives. Pre-registration recommended. (848-4770, bbh.org)

Honolulu Friends Meeting, 2426 Oahu Ave., 9:45 a.m., free. Religious Society of Friends (Quakers) host a Sunday lunch following silent worship and meditation, childcare and hymn singing. (hawaiiquaker.org, 988-2714)

Register for meeting place, 8:30 a.m., $20-$12.50. Explore Hawaii’s amazing tide pools and shallow reefs under the guidance of experienced naturalists. Pre-registration required. (livingartmarinecenter.com/reefwalk.htm)

Kahala Mall, noon-1 p.m. and 2-3 p.m., free. Jenna K performs for the first hour, followed by Zaysha. (kahalamallcenter.com)

Blue Note Hawaii, 6:30 and 9 p.m., $35-$15. (bluenotehawaii.com)

UH-Manoa’s Art Auditorium, 3 p.m., free. Watch screenings of kid-friendly short films including “Lost in Spring,” “Dear Henri,” “Monster Doctor” and “I am Dyslexic.” (summer.hawaii.edu/kidsfirst, 956-9883)

UH-Manoa’s Orvis Auditorium, 1 p.m., free. Five newly choreographed dances will be presented by Kikunobu Dance Co. (hkapcity@hawaiiantel.net)