Thanks to his unbelievable track record of compounding capital over many decades as the CEO of Berkshire Hathaway, Warren Buffett is probably the most closely watched investor out there. Everyone can learn a thing or two following his advice and actions. One of Buffett's best bets has been to buy shares in Apple (AAPL 1.88%), the dominant consumer-electronics enterprise. Berkshire first purchased the stock in the first quarter of 2016, and since the start of that year, Apple has soared 862% (as of Dec. 17), ...