Generate a full detail guide on how to sell unwanted items to make extra money for debt payoff. The guide must be a practical, step-by-step manual. It should include detailed sections on: 1. A framework for deciding what to sell. 2. A detailed guide to selling on Facebook Marketplace, including tips for taking good photos and writing effective descriptions. 3. A guide to selling clothes on platforms like Poshmark or ThredUP. 4. A section on how to handle pricing, negotiations, and safe meetups. Please include a supportive disclaimer.