Looking for a few answers

Hey everyone i see everybody here is very knowledgeable so i have a few questions. Im currently looking to get my credentials and i want to work as a wiper and through the engine department. I want to be able to work off shore but im cobfused over stcw. What courses will be requires for me to work pff ahore and gulf work? Any tips for a youngin looking for work is appriciated. Also i dobt know if msc is what i should just join up with. Im currently an agent in the port of Baltimore and represent two msc vessels and the crew seem kinda happy.