(I've looked/searched through the forums and most threads are asking for books focused on a particular subject or aimed at people who already have prior knowledge on the basics of WWII)
I'm 14 and need a book that tells the basics of WWII. I'm not necessarily
fond of WWII, per se, (or maybe interested), but I really intend to increase my knowledge on the subject. (it seems to be the new thing in school to know a lot about WWII. Of my friends I seen to know the least. I intend to rectify this.

)
So yeah, any book that starts at the beginning of WWII will be fine. From there, I'll read more advanced books on particular subjects and so on.
EDIT- Through searching the forums, I saw this thread:
Looking for a book
Should I start with "John Keegan's The Second World War," as recommended in the above thread?