By Donavan Hall, Beer Columnist While I've been off promoting my new book, The Beer Hall Guide to Long Island, the beer scene has been moving and shaking. There are many opportunities coming up and going on where the beer-curious drinker to find and taste some excellent beers and to improve their beer knowledge. The Long Island Beer and Malt Enthusiasts are now hosting a series of beer "study" sessions (once a month on a Thursday, see the Long Island Beer Calendar) where beer experts and novices come together at one table to taste and discuss the history and qualities…