For equity and debt securities market, there are certain rules of investing. To obtain a stable income you need to purchase debt securities with a fixed rate of return. A method for use with this tool on the market is to choose the more attractive securities and tracking information. Debt securities issued by state and municipalities, and large enterprises. Different principles acquired equity securities. For profitable investment you need to select promising companies, the share price of which varies. When the sale and purchase of such shares trading is formed on the difference in prices of shares. This type of investment is more risky for a solid profit.