This manual is designed to help adult educators to understand and use the Internet in teaching adult students. The manual examines what the Internet is, how one can connect to it, and how it can be used. It also describes ways to communicate on the Internet, identifies sites where information can be accessed, and explains how search tools are used. Included in the manual are 15 sample lessons that provide specific goals and objectives, identify required instructional materials and resources, and offer activities that demonstrate how the Internet assists in meeting these goals. Specific topics covered include the following: e-mail, listservs, Internet relay chat, Usenet news groups, multi-user environments, file transfer protocol, Gopher, and the World Wide Web. An appendix contains 104 online Internet resources, and a glossary defines 107 terms. (KC)