welcome aboard, the great thing about ww2 history, and yes lot's of interesting aspect's is to see where it takes you. I started out by trying to find out how my Grandfather was in the Pacific, which led me to other areas which you are trying to find out, about why the 2nd world war happenend,and the European theatre and so on.
welcome to the forum, sounds like you've got your work cut out for you. In echo of what everyone as said here listen and learn to some of the experts here, and good luck.