Invest for the long term - The stock market gives massive returns to long-term investors, so do not sell good stocks.
Do proper analysis - Learn and Do the proper fundamental and technical analysis of the company before investing.
Do not start with risky investments - Do not start your investment directly in risky things like futures and options.
Invest a major amount in Equity - Your major portion of savings should go into Equity as you do not have other financial responsibilities and can afford a little risk.
Diversify - Don't invest everything in one stock, diversify your portfolio.
Read about markets - Read, Learn, and Understand markets and then Invest.
Do not follow the Tips - Follow your understanding, do not believe on Tips.