In this lesson, the main objectives were to learn how to account for preferred stock on a balance sheet and to understand what a 10-Q report is. The lesson used Simon Property Group as an example to demonstrate how to calculate book value when a company has both common and preferred stock. The lesson emphasizes the importance of paying attention to details when assessing the equity growth of a business, particularly when preferred stock is involved. Overall, the lesson provides tools and information to help understand how preferred and common stock work together on a balance sheet.