This first of two guides on Netscape Communicator 4.5 contains six lessons on the basic functions of the Navigator component. Lesson 1 covers terminology and methods to connect to the World Wide Web, hardware needed, and a Netscape Communicator overview. Lesson 2 introduces the Navigator window, toolbars, and menus, and how to change the default home page. Topics in Lesson 3 are as follows: hypertext markup language (HTML), hyperlinks, viewing a Web page, uniform resource locator (URL), opening a URL, transfer problems, finding text on a Web page, and viewing the document source. Lesson 4 discusses these topics: the history list (HL) and how to view it through the navigation toolbar; the go menu; viewing the HL through the location window and Communicator menu; sorting and searching the HL; setting the expiration date for the HL; preferences; changing the appearance of links; bookmarks; setting, organizing folders for, searching and sorting, renaming, and deleting bookmarks and bookmark folders; adding separator lines; saving a bookmarks file; and importing bookmarks to computer hard drive. Lesson 5 covers the following: how to save a Web document as text and in HTML code, open a Web document as a local file, save images, and print Web pages. The Lesson 6 topics are as follows: search engines; searching the Web using Yahoo's categorized listings, for pictures using Lycos, using Excite's plain English question search feature, and using AltaVista; refining a search; multiple search techniques; and using the Metacrawler search engine. Appendixes include Internet sites of interest to educators and collected sites of interest for vocational and technical education. (YLB)