Ongoing registration for single-day classes held at the American Red Cross, 4155 Diamond Head Road, unless otherwise noted. Certification upon completion. Classes are based on availability and subject to change. Call 800-733-2767 or visit www.redcross.org.

» Administering Emergency Oxygen: 2:30 to 4 p.m. Saturday. Cost: $50.

» Adult & Pediatric First Aid/CPR/AED: 9 a.m. to 3:30 p.m. Thursdayand Monday. Online blended-learning course, 12:30 to 2:30 p.m. Dec. 27. Cost: $110.

» Adult CPR/AED: Online blended-learning course, 3:30 to 5 p.m. Dec. 27. Cost: $70.

» Adult First Aid/CPR/AED: 8:30 a.m. to 1:30 p.m. Friday, Saturday and Dec. 29. Online blended-learning course, 3:30 to 5:15 p.m. Dec. 27. Cost: $90.

» Blood-borne Pathogens: 4 to 6 p.m. Sunday. Cost: $50.

» Cat and Dog First Aid: 8:30 a.m. to 12:45 p.m. Sunday. Cost: $90.

» Citizen "Hands Only" CPR: 1:45 to 2:45 p.m. Sunday. Cost: $15.

» CPR/AED for Professional Rescuers and Health Care Providers: 8:30 a.m. to 3 p.m. Wednesday and Dec. 30. Cost: $110.

» First Aid: Online blended-learning course, 12:30 to 1:30 p.m. Dec. 27. Cost: $70.

» First Aid/CPR/AED Instructor Training Course: 8 a.m. to 7 p.m. Dec. 28. Cost: $500. Before registering, call 456-0431.