The following lectures were originally presented as part of an introductory course on electronic communication principles aimed at sophomore level undergraduate students. The material is meant to provide a rich overview of key concepts and mathematical tools that are involved in this field with the intent of helping the student see the "big picture" of this area. The hope is that the student would have improved insight in choosing appropriate classes in their continuing education which would, in turn, provide detailed understanding of the concepts presented here. Some of my personal favorites in this set are "Energy and Noise", and "Digital Modulation (Part I and II)".