Computer is purely a practical subject, making pupil teachers learn computers in theory class needs a lot of creative and imaginative skills, especially when the learners had no computer background. Authors with their rich experience in the field of teacher education have designed this comprehensive and pictorial book for the upcoming teachers. While designing this book, lot of efforts have been put in, to give concepts a practical shape and to make them clear. We are confident that teacher educators and pupil teachers will be benefitted by this.