First of all we must have an receiver and an emission in order to have both of them working in the context (the message itself). And supposing that they have an same language (the channel used for) to work with. So, by sharing and commenting all about the message we will get this through.
The Diary of Anne Frank. This book goes over the life of a young Jewish girl forced to live in a neighbors attic during WWII in Nazi Germany. The other books are all unrelated to WWII.