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Mr. Fortunato Buenaventura gave me long time ago a little green book written in Spanish, which I couldn't understand at that moment.
Years later, when I finaly understood the words written in its pages, my life changed for the best and for good.
Mr. Buenaventura is a very old man nowadays, and recently decided that the little green book be published.
I, Peter O'Donnell, having profited from Mr. Buenaventura's advice for a lot of years, have gladly honored his wish to share this odd, yet simple to follow, piece of knowledge.