I am a beginning investor, and I was wondering what formulas or strategies are used when calculating value of stocks, or when a stock is over priced, or just some formulas on how to analyze a company? Of course, using ratios such as the peg are utterly uselss and could be said as being the same as flipping a coin. So to restate my question one last time, what formulas or strategies are using by the investor frequently, and successfuly?