Language classrooms are very challenging learning environments, both for the teacher and the student. The teacher tries to cope with the multiple competencies of the language learners, while the student tries to cope with the nuances of a new language. Computers in the language classroom can be an aid to the teacher and the student alike. Learning to maximize the potential of using computers in the language classroom is an area of study in itself—Computer Assisted Language Learning (CALL). As an interdisciplinary subject Computer Assisted Language Learning aims to assist the teachers in developing computer based language learning modules that would assist their students. The book focuses on various theoretical constructs that come together when we study about CALL; and how we do conceptualize, plan and design a CALL module for our own language classroom. The book may be used by anyone who is interested in conceptualizing, planning and developing their own computer assisted language learning modules for their classrooms.