This document discusses the user experience (UX) of data visualization. It begins with a brief history of data visualization, then discusses how humans process visual information faster than text. The core of data visualization is explained as transforming data into a visual representation to make it more understandable. Effective data visualization tells a story or narrative with the data. The document outlines five steps to create good data visualization: understand the source, understand the context, identify the narrative, define the user experience, and emphasize simplicity. It emphasizes designing for any screen or browser using responsive web design principles.