The Internet and the World Wide Web have made access to information easy but do not solve the problems of finding exactly what we want. Since the first edition of this librarianship text appeared, the development of computer technology has meant that the organization of information has become a complex area. This edition places emphasis on the intellectual effort required to make a meaningful use of the amount of information now accessible to the searcher. It includes: information retrieval systems; database access systems; online searching and OPACs; hypertext; and networked systems. The book describes how we search for information by looking at the problems involved, at the theoretical principles suggested as solutions and their practical realization, classification schemes, lists of subject headings and thesauri.