Anyone who had taken SEC in Canada please help

hi I'm a nurse from the philippines, I applied for registration in CRNBC but they are requiring me to take SEC. I'm aware that I need to get a temporary resident visa. But can anyone please tell me how to prepare for SEC? and does anyone pass it? or everybody has to go through taking classes and updates? By the way can I work as LPN while waiting for the result? Is it hard to convert my "tourist visa" to working visa? Thanks and God Bless