Organizing, managing, and making accessible a wide variety of resources is critical to the library mission. But as the nature of information changes, libraries must modify their functions and processes. This timely manual shows how to best integrate online resources into traditional workflows - collection development, acquisition, description, organization, and administration - and includes a special section on managing local digital libraries. The authors provide step-by-step guidance for analyzing, recording, and organizing the bibliographic data of online content and best practices for cataloguing electronic monographs, serials, integrated resources, and digitized collections. Their practical guidance includes fully worked out coding for MARC21 records for a variety of formats. Chapters explore alternative means of compiling and promoting collections through web lists, information links, and federated searches. This useful guide is an essential addition for any library looking to satisfy the needs of users in the 21st century.