This document discusses user experience (UX) and how people feel when using products and services. It explores whether UX is the same as usability and asks what users want versus what they actually get. The document recommends asking users what they want and observing what they are actually doing based on the Principle of Least Effort. It discusses how library signage, physical layout, and shelf location can impact user experience and book circulation. The document also covers responsive web design, personas to represent user groups, and examples of tools and techniques libraries can use to improve user experience.