Finding primary historical sources can be intimidating!
On the one hand, there are so many options both though the library and on the web.
On the other hand, your research may take you to a dead end, leading to materials that you can't access (not digitized or behind a pay wall) or to a realization that materials related to your topic simply have not survived.
This guide focuses on what WCU Libraries has for the World War II era and tips for selecting and using those resources. it also provides some select ideas for finding resources out of the library. Your class D2L page also has many specific examples of useful archives and digital collections.