During the development of the intervention in Phase 1 the investigators will use a patient-centered, iterative design process that includes interviews, prototype development and testing. The investigators will recruit a diverse group of AF patients to determine preferences for information about AF and anticoagulant therapy. The investigators will use a user-centered design approach and best practices in human-computer interactions (HCI) to determine the desired content, timing, and delivery of tailored education in the PHR. The investigators will build out wire-frame models (low fidelity messaging prototypes) based on focus group findings to perform usability testing and further refine the intervention design. The intervention component will assess the impact of pushing tailored health education messages to patients through their PHR. The tailored health education will be specifically aimed at improving patient compliance with anticoagulant therapy.