This document provides an introduction to contract law. It defines a contract as an agreement between two or more parties that intends to create legal rights and obligations that can be enforced in court. Contracts can be classified as formal contracts, which do not require consideration, or simple contracts, which do require consideration from both parties. The essential elements for a valid contract are intention, agreement, consideration, capacity, consent, and legality. Intention refers to the parties intending to create legal relations. Agreement requires an offer from one party that is then accepted by the other party.