Designed for use by educators and school media specialists, this resource guide identifies some of the major sources of information dealing with the use of microcomputers for instructional purposes in elementary and secondary education. It is also intended to serve as an ongoing guide to the location of up-to-date microcomputer information for educators interested in keeping abreast of the field. A brief evaluative description is provided for each of the resources, which are presented in 22 major categories: associations, resource centers, and user groups; information clearinghouses; bibliographies; introductory guides to educational computing; resource guides; directories; indexes and abstracts; periodicals; databases; dictionaries and encyclopedias; yearbooks; conference proceedings; biographical sources; statistical sources/government documents; hardware information resources; software/courseware resources; textbooks; popular and notable books in the field; evaluative articles -- the state-of-the-art"; sources of book reviews; nonprint materials; and book publishers. Fifteen references are listed, and additional information for each of the resources listed is provided in the bibliography of books, articles, periodicals, and associations which concludes the guide. (BBM)