The National Maritime Museum in Greenwich, London SE10 runs courses in association with Goldsmiths' College which form part of the Open Museum programme and can give access to degree study. "Nelson - a commemmoration" will be held Tuesday mornings, May 2-June 20, and "Introduction to museum studies" on Wednesday mornings, May 3-June 21. Pounds 30 or Pounds 6 per session, Pounds 21 concessions. Saturday courses include: "Imaging the sea: film and historic photographs", May 6, and "Genealogy - the museum's resources", May 20. Fee: Pounds 25, Pounds 17.50 concessions. Details: Suzanne Testa, 0181 312 6747.