I. Introduction. II. Requirements: How to gather requirements; Users and the domain; Tasks and Work; Thinking about and Describing Requirements; Case Study on requirements. III. Design: Work reengineering and conceptual design; design rationale and principles; Interaction design; Interaction styles; Choosing Interaction devices: hardware; Choosing interaction elements: software components; Case study on Design; Style guides; guidelines and user-centered design; Designing a GUI; Designing for the Web; Design of embedded computer systems and small devices; Case study on requirements, design, and evaluation. IV Evaluation: Why evaluate? ; Deciding on what to evaluate, the strategy; Planning who, what, where, and when; Deciding how to collect data; Final preparations for the evaluation; Analysis and interpretation of user-observation evaluation data; Inspections of the User Interface; Variations and more comprehensive evaluations. V: Persuasion: Communication and using findings; Winning and maintaining support for user-centered design; Summary.