MEDLINEplus [http://medlineplus.gov/] has extensive information from the National Institutes of Health and other trusted sources on over 600 diseases and conditions. There are also diagrams, a medical encyclopedia, a medical dictionary, information on prescription and nonprescription drugs, health information from the media, and links to thousands of clinical trials. It’s nice place to get some basic information about medical conditions and diseases. I also like it because I find it very easy to use.