Practical leaning of economics

In this 1st trimester micro economics is one of the interesting subject, in that I have learned economics is a study on human behavior that how individuals and societies make decisions about ways to fullfill their wants and needs by using their resources.
And coming to micro economics it means how the individual is going to take the economic decisions in the society.
Each and every concept taught in class by Prof.Prashant Kulkarni Sir is completely practical with day to day life examples.
I have learned and used some of the concepts in my life.
In that I have used Opportunity cost while I am shopping t-shirts in D-mart.
Thank you Sir.