Rajesh, with not knowing anything about you, it will be difficult to give you and specifics. However, I can give you some general directions that you can take. 1. You can seek out a financial planner in your area to sit down with and talk about your specific situation. 2. You can do it yourself via any online discount brokerage. 3. You can go to any Robo-Advisor. These are the three main options. I would encourage you to speak with someone first about your situation to determine which of the three makes the most sense for you.
Before you begin investing you should think about your objectives. I would make a list of your goals and put specific dates and values in it. For example, "I want to retire at 65 and have an income of $100,000 for the rest of my life." Once you do that, you can get help determining the best way of reaching that goal.
Keep in mind, investing is a means to a goal, not a goal in itself.
If you're new to investing, it's safe to assume that your goal is to achieve a wealth target. Outside of starting your own business or inventing the next great thing, people are limited in what they can invest in. It usually comes down to stocks, bonds and real estate. The rate of return on real estate always comes from using the leverage component of buying real estate. Bonds are paying less now than they have in almost any time in US history. Stocks have historically provided the highest rate of return for someone who wants to invest passively. To get a better understanding of the power of growing your money in the stock market vs the bond market or any combination of stocks and bonds, read this study. http://www.brightscope.com/financial-planning/advice/article/28708/How-To-Build-Wealth-In-Your-401K/