1. The essential elements of contract
Definition of Contract:
An agreement enforceable by law is a contract.
Some agreements can not be enforced through the courts
of law. For example, an agreement to play cards or go to a
cinema.

2. The essential elements of contract:
Offer and acceptance
Intention to create legal relationship
Lawful consideration
Capacity of parties
Free consent
Legality of the object
Certainty
Possibility of performance
Void agreements
Writing, registration and legal formalities

3. Method of formation of a contract:
Express contract
Implied contract
Quasi contract
The time of performance of a contract:
Executed contract
Executory contract