Economics may have a reputation as a dismal science, but in fact it addresses some of the most fundamental problems we face: How to make the best decision given that resources are limited.
You can use the tools of microeconomics to decide how best to spend your income; how best to divide your time among leisure activities; or how many people to hire in the business you run.
Life is full of choices.
Microeconomics can help you decide how to make them.



Lecture Notes : http://ocw.mit.edu/courses/economics/14-01sc-principles-of-microeconomics-fall-2011/unit-1-supply-and-demand/introduction-to-microeconomics/MIT14_01SCF10_lec01_300k.pdf