I am filipina and wanting to take a short course of 5 sundays at YMCA hk, need to stay at least 6wks

Do I need a visa to be able to take a short course (care for elderly)of 5 sundays at YMCA hk, it is a course offered by ymca for domestic helpers, I will need to stay in hk at least 6 wks. What type of visa should I apply?