N.B. There are literally thousands of books on World War Two. It would take over a lifetime to read them all; but here is a first selection in which you may find a book new to you, and many of which I have used in preparation for my first talk on the subject, 15th January.
Hitler's American Gamble Simms & Laderman
Atlantic Meeting HV Morton
Churchill and America Martin Gilbert
The Second World War Vol1 Winston Churchill
All Hell Let Loose Max Hastings
The Armchair General John Buckley
Eight Days at Yalta Diana Preston
World War II - The Autobiography ed. Jon Lewis
World War II at Sea Craig Symonds
Blitz MJ Gaskin