Hey Reddit historians,

This summer I am taking a course titled "Fascism & Nazism" at a local college in my area to make up for a missing credit. I haven't studied World War II since 9th grade, and I was wondering if you guys could offer some suggestions for a comprehensive or particularly acclaimed book to refresh my memory a bit and prepare me for the material. I'd like to have a head-start before the class begins. What do you think?