Accounting and financial analysis abilities are required to read financial statements. The knowledge that thousands of successful investors demonstrate that expert-level expertise in these fields is not required to succeed as an investor. Having said that, investors must develop common sense in order to judge business trends, and skills in order to detect profitable financial data patterns. These patterns may be learned by regular observation and practise by anyone interested in markets. It has been proven that pattern detection and practise, rather than text book narratives, help people learn faster and better.