The document discusses analyzing EZProxy logs to understand library resource usage at the user level and calculate a cost per user. It describes how EZProxy logs can be matched to student data to attribute usage to individual users. Calculating cost per user provides insights not available from typical usage statistics like most-used resources, heaviest users, and subject areas of use. The analysis can reveal which user groups use which resources, how resource use relates to student attributes like class standing and GPA, and the return on investment for individual subscriptions. A live demonstration shows interactive visualizations of usage data. Analyzing this granular level of usage data helps libraries understand user behaviors and the value of resources.