At least a 4 year under-grad study at a university followed by 2 years post-grad study. The actual courses that you take with your post-grad studies will help alot, such as a child and family course.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.