Winemaking. Not the WinOS emulation kind. But the cultivation and fermentation of fruit. With the eventual goal (beyond 2017) of living on a producing vineyard.
Formal study would be fine, perhaps at UC Davis' world class Viticulture and Oenology program. Or in Burgundy, France. But for now just apprenticing once a month at Wind Gap Wines in Sebastopol and seeing whence it leads