Internet Medieval Sourcebook-Fordham University http://www.fordham.edu/halsall/sbook.html This site can feel overwhelming, so be patient. There are a wealth of primary source materials on all aspects of medieval life in the world. Try clicking selected sources and scrolling down to the subtopics or use the search feature.
The Internet Connection for Medieval Resources-Netserf http://www.netserf.org/ The Connection provides a great searchable index to information about social groups such as women musicians, authors, and saints, as well as numerous other groups and cultures. Information on food, clothing, and many aspects of daily life. Includes images, primary documents and music.
Medieval Society-Boise State University http://history.boisestate.edu/westciv/medsoc/ There are three classes of people described: prayers, fighters, and workers. Each class includes subdivisions with descriptions about their daily lives, beliefs and living conditions.
Middle Ages-Learner.org http://www.learner.org/exhibits/middleages/ What was life like in the Middle Ages? Focuses mostly on peasant and serf life, with information on housing,health, clothing, entertainment and townlife.
The Medieval Technology Pages-New York University http://scholar.chem.nyu.edu/tekpages/Technology.html The Department of Chemistry has descriptions of how all sorts of medieval items were made, from soap to horseshoes. There is also a timeline. The site has well documented references.
Dress, Jewels, Arms and Coat of Arms Material Culture and Self-Representation in the Late Middle Ages http://www.ceu.hu/medstud/manual/SRM/index.htm Want to see costumes, jewelry, weapons or images of feasts? This site offers resources on these plus a section on heraldry. It even offers interpretations of some of the symbolism and paintings.
Black Death Resources: The Black Death: Boise State Üniversity http://history.boisestate.edu/westciv/plague/ From an index, you can select any aspect of the Black Death to investigate. Included are both historical primary accounts and current interpretations.
General: Annenberg's Learner http://www.learner.org Annenberg’s resource site. Use the search option to find your subject.