This lecture introduces the fundamentals of Human-Computer Interaction (HCI) and Interaction Design, focusing on goal-directed design, user modeling, qualitative research, prototyping, and evaluation. The course covers the history of HCI, misconceptions, successful design criteria, and the importance of usability and playfulness in design. It emphasizes the need for professional training in HCI, as it saves money for companies and offers career opportunities. The lecture also addresses the course objectives, including design thinking, analytical thinking, and becoming a user experience designer through hands-on projects.