@onlyYou:Warren Buffett's annual letters to Berkshire Hathaway investors are never short of lessons for stock investors. This year was no different, as Buffett wrote in details about how one needs only a few winners to do wonders, why one should try to identify pieces of wonderful businesses at wonderful prices and why one should be a business-picker and not a stock-picker. Buffett has one more advice for investors: "Find a very smart high-grade partner – preferably slightly older than you – and then listen very carefully to what he says." This, he said, in the context of his long-time partner Charlie Munger, who is Vice Chairman at Berkshire Hathaway.