Microeconomics covers the basic concepts of classical and neoclassical economics, price and employment theories, consumer behavior, Income and Substitution effect. The Book is helpful to all directly or indirectly linked to economics and economic activities. The theory of consumer behavior is the concern of how consumers decide on the basket of goods and services they consume in order to maximize their satisfaction. The theory of demand starts with the examination of the behavior of the consumer, since the market demand is assumed to be the summation of the demand of the individual consumers.