There have been many experiments and innovations in the field of education and training regarding knowledge delivery. From face-to-face to virtual education, different technologies have played great roles at different times. In the last two decades, due to the advent of computer technologies, information delivery has got new meaning. Development, access, and transfer of text, sound, and video data have given a unique face to classrooms, libraries, and training and resource centers, in the form of interactive multimedia programs. Interactive multimedia as a subject/topic is still in its stage of infancy, which excites and attracts educational technologists. However, design and development of an interactive multimedia program is a complex task involving a team of experts, including content provider(s), multimedia developer(s), graphic designer(s), and, of course, the instructional designer(s), who most of the time plays the role of a project manager as well. This book is not about multimedia development, but the subject matter delves into the complex issue of planning, guiding, and designing multimedia from the instructional perspective. As such, we address pedagogical issues, applications, and effectiveness.