1. Uniform Commercial Code Article 2- Sales
https://www.law.cornell.edu/ucc/2
Text book chapter 8, 9, 10
2. https://saylordotorg.github.io/text_advanced-business-law-and-the-legal-environment/s11-introduction-to-sales-and-leas.html
3. https://saylordotorg.github.io/text_advanced-business-law-and-the-legal-environment/s12-title-and-risk-of-loss.html
4. https://saylordotorg.github.io/text_advanced-business-law-and-the-legal-environment/s13-performance-and-remedies.html