Synopsis This book Information Technology: applications (Theory and Practice) will serve as a firm and accurate base for the course objectives as well as information needs of the papers XIII and XIV of UGC Model Curriculum for the integrated MLISc. Programme. Topics covered include Library automation (covering house-keeping operations like, Acquisition, Cataloguing, Circulation, Serial Control, OPAC, etc.); Planning and implementation of library automation; software packages with special reference to India; communication technology (comprehending networking, components, types and topologies of networks, particulars study of LAN); Internet (Internet services, Connectivity modes, Protocols), Web browsers, Web servers, Web tools, Search engines, Security, e-mail, teleconferencing, facsimile, Telex, Videotext; Digital libraries (Genesis, definition and scope, storage media, software and hardware required, equipment needed, Data warehousing, Data mining and Meta Data etc.) and finally deals with Artificial intelligence and Expert systems. The practical part covers with use of CDS / ISIS packages, CD-ROM and online searching; Internet searching; and Library Web page designing and creation. Thus, this book provides basic concepts of library automation; Library software packages; Networking; use of internet, digital libraries, creation of databases, use of CD-ROMs, online and Internet searching, creation of library webpages, etc. This book shall come handy to teachers and students of MLISc programme. It can also provide a general reading to all those who want to know A, B, C of library automation, networking, Internet and Digital libraries.