To be honest, I think the best thing to do is call them or e-mail them to enquire if there is any work experience available and if there is they would explain how you would go about applying for it. Usually they would have an application form online perhaps or if not advise you to hand in a CV. Contact them prior to applying to ensure you at least have a chance or if there's anything available to avoid wasting your time. (Just talking from my personal experience as I had to apply to a couple places before I realized some were almost full). Best of luck