Google is useful for finding Web sites. Check out Google's Cheat Sheet for tips on using Google more effectively. The library also has guides and tutorials to help you navigate the Web.
Another great tool for locating health-related Web sites is MedlinePlus. MedlinePlus will lead you to Web sites that will answer medical questions. These Web sites have been reviewed for authority by experts from the National Library of Medicine and the National Institutes of Health. Sites found through MedlinePlus are great starting points and are particularly useful for patients.