This is a concise, thorough, and clearly written guide to the world's largest computer network. Thomas shows you just what you need to do to get on-line using today's software for Unix, Windows, and Macintosh computers. Also given is a 200 page directory to on-line resources in the sciencesand engineering. For this new edition the resource section is completely updated, World Wide Web coverage increased, and search techniques for the Web more fully explained.