Book recommendation (about the Internet)
 

My dad is a real estate agent who does not really understand what web 2.0 has become. I tried to explain to him about RSS feeds, blogs, etc. but he just does not understand it or I lack the patience to really explain it to him. Does anyone know of a good book that will explain this stuff? He knows how to check his email and browse the internet. I am just looking for something that will take his web productivity to the next level.