"How do browsers and the web actually work? What is HTML5—or HTML, for that matter? What do terms like “cookies” or “cloud computing” even mean? More practically, how can we keep ourselves safe from security threats like viruses when we’re online?" Read more about the book at the Official Google Blog)
Though the illustrations by Christoph Niemann might lead you to think this is a children's book - it isn't.
(Investigating Mr. Niemann's web links, I found this video. It is only tangentially connected to the subject of this post; I thought you would enjoy it.)