The Internet is an international computer network encompassing thousands of smaller interconnected networks. This digest describes various uses of the Internet and its impact on libraries, as well as Internet-related library issues. The Internet applications of electronic mail (E-mail), telnet, and file transfer protocol (FTP) are briefly described. The impact of the Internet on libraries includes: leadership opportunities; cost and time savings; question answering services; international interlibrary loans; document delivery services; online transactions; government information; information sharing; and increased librarian visibility and value to the community. Internet-related issues are discussed with respect to academic, public, special, and school libraries. It is recommended that librarians take an active role in the formulation of national policy and legislation, creation and organization of services and resources, and be properly trained in network literacy in order to provide programs for patrons to become network literate. (Contains 9 references.) (MAS)