This lecture covers the basics of corporate finance, focusing on debt, leverage, and capital structure. It explains the different forms of debt, the importance of the debt-equity ratio, and the concept of the firm's value as the sum of debt and equity. The instructor discusses the management of capital assets, investment decisions, and financing decisions. Additionally, it delves into the leverage of Swiss Market Index companies and the capital structure of Nestlé S.A., providing insights into credit ratings, debt ratios, and financial instruments used for corporate financing.