Serials cataloging is a difficult specialty to master, often requiring the cataloger to grapple with changes in title, frequency, numbering, and whether or not a given title is current, ceased, or resurrected. Until relatively recently, one of the few constants about serial issues was that they were delivered in a physical medium, usually in print, but sometimes also in microform. The advent of electronic resources adds another layer of complexity to an already amorphous type of material by rendering it virtually. The Serials Cataloging Cooperative Training Program's (SCCTP's) Electronic Serials Cataloging Workshop is intended to help catalogers new to the challenges presented by electronic serials by providing a comprehensive overview of CONSER (Cooperative ONline SERials) practice; the Anglo-American Cataloguing Rules, second edition (AACR2); and MARC 21 tagging specific to electronic serials.