The Regia Anglorum, is an English re-enactment society. The society maintains a wealth of information about life in medieval England using the virtual village of Wichamstow and its surroundings. They have in-depth articles on many of the crafts and trades that the villagers would have undertaken, and about the places they would live and work.
They have also created a real live medieval village and estate with which to demonstrate medieval craftsmanship.
Of course, if you you just want to cook like those in the medieval or Renaissance period you should check out http://www.godecookery.com for some fascinating and tasty recipes.