Buying shares of a single company is a science while building a portfolio of shares of 15 to 20 companies is an art. Now let's see how. To buy a company's shares is to look at the fundamentals of the company and its future, and especially its management. Based on this study, its future is bright or dim. First, what are the fundamentals? Fundamentals is how the company has progressed in the last three to five years. How much did its sales increase every year and how much did its profit increase? The future of the company is decided on