This document provides information on how to invest in mutual funds as a way to earn extra income. It outlines the basics of mutual funds, including that they are a simple and easy investment method similar to a bank fixed deposit that allows your money to grow while you sleep. The document then gives steps for investing wisely in mutual funds, such as learning the fundamentals, selecting good funds, understanding the procedures, investing small amounts initially and building a portfolio over time. It states that following this process can help you earn returns from mutual fund investing.