Whitney Hess outlines the principles of user experience (UX) design, emphasizing the importance of creating impactful and user-centered designs through various methodologies such as stakeholder interviews and usability testing. The document lists core principles of experience design that prioritize user needs, encourage simplicity and feedback, and foster a strong first impression. Additionally, Hess provides examples of design principles from companies like Google, Facebook, and Starbucks to inspire the establishment of a unique set of guiding principles for organizations.