In 1988, the Missouri State Library offered microcomputers to Missouri public libraries to help them implement a retrospective conversion of their cataloging system to an online system called Bibliofile. The goal of the State Library was to create and maintain a Union Catalog for Missouri libraries. This guide provides Missouri library personnel with basic information on: (1) setting up the system (e.g., how to plug in cables and how to hook up a printer); (2) operating the computer equipment (e.g., how to insert a floppy disk into the "A" drive and how to format disks); (3) what the available menu options consist of (e.g., Bibliofile, word processing, telecommunications, reference databases, and computer-assisted instruction); (4) how to use the maintenance operations menu (e.g., backing up disks and restoring data); (5) how to use the CD-ROM Bibliofile system (i.e., step by step instructions for conducting a search and creating catalog cards); and (6) troubleshooting four common problems. The brief technical programming notes which conclude the guide include a list of the subdirectories of the system. (SD)