A short item that gives you the flavor of
Mohammed-Charlemagne-Revisited
and then if you really want to undestand it all, there's this:
John O’Neill’s “Holy Warriors.” Rocked my world.
After or al0ong side (is best) read the Hadiths and Sunnahs from these authorized holy books to understand what is meant in the sura you just read:Talibari, Muslim, Isaq and Bukhari. Otherwise, you are just guessing; the koran is not like the Bible as it takes four other books to understand what the first says.