Debt 101 by Michele Cagan is a practical guide to understanding and managing various types of debt, including credit cards, student loans, and mortgages. The book explains key concepts like interest rates, credit scores, and repayment strategies, offering readers clear, actionable advice on how to reduce and eliminate debt. Cagan provides tips for navigating debt consolidation, negotiating with creditors, and improving financial habits to avoid future debt traps. Debt 101 serves as an essential resource for anyone looking to regain control of their financial situation and achieve long-term financial freedom.