This document provides study notes on offer and related concepts under contract law for law students. It defines an offer as a proposal made with the intention of obtaining the assent of another party. An offer must be communicated, definite, and capable of creating a legal relationship. The document outlines different types of offers and how an offer can be terminated, such as through revocation, lapse of time, failure to meet conditions, death or insanity of the offeror, counteroffer, rejection, or non-acceptance in the prescribed manner. The study notes include examples to illustrate key points and explain essential elements and types of offers.