Well, if you wanna start your Bavarian beer trail you'll have to begin in Munich. Some non-stop flights to Franz-Josef-Strauss International Airport, Munich are possible, else you'll come via Frankfurt International, the major hub for U.S.-Germany bound long-haul flights.
In Munich, you'll get acquainted with six major breweries and their craftsmanship of a diversity of beers. The oldest of them is Augustiner Braeu of Munich since 1328 (high season of the Middle-Ages, over 500 years after the founding of the Holy Roman Empire of German Nation with the coronation of Charles, the Great -Charlemagne- 800 AC). The monks of St. Augustinus were the founding fathers of this noble stuff of a bottom-fermented pale export lager with 5.6 % alc v/v. It's almost strong beer, slightly above the regular range of Bavarian (German) beers of 5.0 % +/- 0.5 % alc content v/v.
It's hoppier than the strong and maltier brews of Andechs' doppel-bock monastery beer or Paulaner's Salvator.
It's a refreshing, pale yellow-golden brew of theirs; excellent for the Oktoberfest as well.
The Munich-based breweries have agreed on a jubilee strong beer of 6.0 % for the latest Oktoberfest that will end tomorrow on Oct 4th, 2010.