Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Be skeptical, very skeptical

Skip this, start with Brewing Classic Styles. A friend gave me his copy of this book. I'm an all-grain, German lager brewer with a German wife, so I get to explore German beer roots. This book may have been great in its day, but....with more malt varieties available today, better software, and more US brewing knowledge, this book hurts more than it helps. It need specific instructions for all grain, not just a side caption adjusting for the base malt. BTW, Munich needs to be mashed. Give me malt percentages, not real weights base on your efficiency...a book should save me that extra math. "Crystal 40" does not belong in German beer. Give me Caramunich II or something from Weyermann. No wonder my friend gave up home brewing and gave me his book. Does no favors to someone getting started.