This workbook for participants in a 1988 Texas State Library workshop is designed to provide a step by step outline for the full process of bibliographic, item, and patron conversion from paper files to an online environment; to orient participants to various methods and major vendors of bibliographic retrospective conversion; and to provide a working definition of data conversion and related terminology. The following topics are covered: (1) issues in bibliographic conversion, including standards, methods of retrospective conversion, and authority control; (2) tape processing options and item record creation, including systems for labeling individual items; (3) barcoding procedures and patron conversion, i.e., optional ways of labeling items and registering patrons; and (4) planning, procurement, and database maintenance, including sample RFPs (request for proposal) and sample procedures for authority control. Also provided are an outline of tasks involved in a data conversion project; cost sheets for retrospective, patron, and item conversions; and lists of data conversion service firms, OCR label vendors, barcode label vendors, and plastic library card vendors. (47 references) (CGD)