The second edition of this successful book explains each aspect of the Internet in a straightforward way and reflects changes in this fast-moving field. It contains all the relevant developments, as well as reviewing and refreshing all the online resources cited, and it includes a beginner's guide to website design and to identifying useful sites. Providing clear explanations of the origins of the Internet and its workings, email, and the World Wide Web, it gives practical advice on how the Internet can aid doctors, nurses and managers in their daily work and shows how an organization can harness the Internet to co-ordinate its own business and keep its staff informed.