Useful links about Port and Douro wines
The Port and Douro wine Institute official website
Wines Of Portugal
For The Love of Port provides comprehensive information and professional reviews of Vintage Port, Madeira and Douro wines
Cool videos from Dominique Laporte, France's best sommelier 2004, and Master of Port 1998 (video in French)
Dalva
Quinta do Portal
Quinta da Romaneira
Quinta Seara d'Ordens
Kopke
Andresen