ORIGINAL: JSS
Rise & Fall of the Third Reich is near the top of my must have WW2 books.... von Mellenthin's Panzer Battles too
I'll second that - "Rise and Fall" is by William Shire - essential.
Heinz Guderian wrote a memoir called "Panzer Leader" - IIRC.
Albert Speer wrote "Inside the Third Reich" - weirdly fascinating.