Someone in office told me to invest in PPF before 5th of every month. Can you explain that logic?

Someone mentioned that one must invest in PPF before the 5th of the month. Why so?

Is it correct to assume that you need to have a portion of your portfolio invested in gold?

Can you throw some light on what are the rights and obligations that the investor should be aware of?

I am planning to invest in debt fund of mutual funds. Can you tell me some of the key parameters that I should be looking at to evaluate a debt fund?

Could you please tell me more about the Post Office Savings Account?

Can you explain the concept of mutual fund holding period to me?

I am not still clear about the calculation of STCG tax by clubbing it with total income. Can you explain that with an example?

Can you explain to me the gist of a bonus issue of shares by a company and how does it affect my shareholding?

Can you explain to me the gist of how a stock split impacts my capital as a shareholder of the company?

Can you explain to me with an example, how I as an investor can make the best of the grey market information?