Do you have questions about the internet? There's an app for that. Google has published an online ebook to explain the internet. The goal of the book is to inform the reader about basic functionality of the internet, such as how networks function, what the purpose of a protocol is, what is HTML and HTML5, emailing and the difference of the world wide web and other internet services.

Check out the book here Google EBook "20 Things I Learned About the Internet"