I visit Zeno's warbirds video website frequently. They have two B-17 instructional videos, plus similar videos for almost every other type of USAAF bomber and fighter. They also post new videos in their 'at the matinee' section every month and take the old vids down so revisit every once in a while. One of the one's posted this month is the story of the first B-17 strike on Rouen, France. The videos you want to watch can be saved if you use windows media player, let it load completely and then just click on 'save as'
http://www.zenoswarbirdvideos.com/main.html