In 2012, an academic health sciences library serving a large research university and medical center introduced synchronous online training for a diverse group of users, including clinicians, researchers, faculty, and distance students. Participants in these "Express Training" classes completed two surveys to assess their experiences. Survey results indicated classes were well received but revealed some areas for improvement. Included are issues that should be considered when implementing online library instruction to meet the diverse needs of academic health sciences library users. Given the popularity of online training among on-campus and distance users, it will be continued and expanded.