This document provides an introduction to a course on Human-Computer Interaction (HCI). The course goals are to motivate the field of HCI and teach the basics of interface design, evaluation methods, and HCI research problems. The class will include lectures, readings, quizzes, presentations, and a final project involving designing and evaluating a new interface. The document discusses what HCI encompasses, important concepts like universal usability, and emerging interface technologies. It emphasizes that good interface design can improve effectiveness, productivity, and satisfaction for all types of users.