…don’t read this book. Well, go ahead, but be ready, in the last third, for lots of sinews, blood and guts, as former New Yorker fiction editor Bill Buford heads to Tuscany to apprentice with the Dante-quoting, raw-meat loving butcher of the subtitle, Dario Cecchini. And before that, whether you’re carnivore, herbivore or omnivore, be…