Hello,
Unfortunately, I had to remove your question as it was too vague. Could you resubmit it with what specifically you might want to know about churchill and WWII?
If just about Churchill in general, I might recommend a biography. There is also a very recent thread on Hitler and WWII here: http://www.reddit.com/r/AskHistorians/comments/27pan2/how_powerful_was_the_influence_of_the_bankers_and/