This lecture provides a foundational overview of contract formation, outlining the essential elements required for a legally binding agreement. It explains that a contract necessitates mutual assent, typically through offer and acceptance, along with consideration, representing the bargained-for exchange. The discussion also covers the importance of legal capacity and lawful purpose, while further detailing various defenses that can prevent contract enforcement, such as fraud, duress, and the Statute of Frauds. Ultimately, the lecture establishes the fundamental principles that determine whether a valid contract exists under both common law and the Uniform Commercial Code.