Could you please also tell me from where to buy the Unlisted Shares along with the procedure involved. Could you also let me if there are any risks involved.
Unless you know of someone who holds shares of a privately held business and ready to sell, there is no legal place to buy unlisted shares as such in India. There are a few of them doing this internationally like sharespost, secondary market, equityzen, Zenprivex (singapore).
Even if you find someone locally holding shares of unlisted companies, you will need to check with the company if they are okay with shares changing hands (certain companies might have restrictions).