The Internet Book: Everything You Need to Know About Computer Networking and How the Internet Works by Douglas E. Comer
For use as a primary text for courses on using the Internet or as a supplement for computer literacy courses that cover networking or the Internet.
Doug Comer's, The Internet Book, Third Edition utilizes a non-technical perspective to explain the technology of how computers communicate, what the Internet is, how the Internet works, and what the Internet can do for people. This book works to fully connect students to the big picture by presenting a solid overview of networking and the Internet, rather than burying them with details. Comer assumes no prior background in computer networking or the Internet.