Sulphur dioxide (SO2) remains the single-most useful additive in the winemaking process, preventing micro organisms and oxidation from spoiling virtually all wines. 

A brief info about how to study through The Wine & Spirit Education Trust (WSET) and how to become Master Sommelier (MS) or Master of Wine (MW)

Wine to me is passion. It's family and friends. It's warmth of heart and generosity of spirit. Wine is art. It's culture. It's the essence of civilization and the art of living. (Robert Mondavi, 'Harvests Of Joy,' Autobiography)

In many cultures, wine was combined with food, so the winemaking and culinary traditions of a region will have evolved together over the years. The modern ‘art’ of food pairings is a relatively recent phenomenon. It fosters an industry of books, guides and media with guidelines for pairing of particular foods and wine.