This project will enable libraries to help build their communitys health data literacy. The Western Pennsylvania Regional Data Center at the University of Pittsburgh and the Allegheny County Library Association will develop and pilot test a series of online learning modules for library workers that will equip them with the tools and skills to build data literacy among people in the communities they serve. As a result of this project, people will be better-able to: 1. discover health data and evaluate its accuracy, 2. understand the purpose for which it is created and the processes through which it is collected; 3. evaluate how well the data reflects the lived experiences of people in their community; 4. work with and analyze health data; and 5. build and communicate narratives about community health and the structural factors that affect it.