This interactive, Web-based tutorial teaches users to find HIV/AIDS information more easily and quickly. The tutorial is divided into four sections that can be used in order or independently. Section 1. Introduction to the Web gives background and history of the Internet and Web, defines key Internet terminology, and provides a basic tour of the Netscape and Internet Explorer Web browsers. Section 2. Strategies for Locating Reliable HIV/AIDS Information discusses alternatives to using search engines, introducing users to several high quality HIV/AIDS Web sites such as MEDLINEplus, HIV InSite, AEGIS, and others. Section 3. Using Search Engines Effectively goes over the basic functions and features of search engines, and provides tips and hints for using them more effectively. Section 4. Evaluating Web Sites introduces users to a series of standard criteria or measures for evaluating Web sites, teaching them to determine whether Web sites and resources are valid and accurate, timely, or reliable.