One thing that separates fledgling investors from the pros is reading financial statements. For amateurs, comparing the so-called headline numbers — sales and earnings — to estimates is the full extent of research into a company, whereas in more experienced hands, they are just a starting point. If you want to become a better investor, make like a pro and digest the financials. It’s the best way to truly understand a company’s performance. In the lead up to the start of earnings season later this month, we’ve put together a five-part series to help Club members better understand all the tables and charts and how to analyze them. Here’s Part 4: The ratios.