Hi,
Refering to what you said: My friend ask me to buy some software like CRM and Accounting System, I think that should be one part of the business at the starting. ----> This is not true. I own my own business and also know many other people who do. I can confidently say that this is not a criteria. I do not need to buy any of those softwares to start up my businesses.
I also know some people who try to cheat me and my friends. Saying that buying those CRM & accounting softwares are claimable by PIC etc etc- though in a way it is claimable, but only certain % is. In the end you will also end up forking out your own money for softwares that you do not actually need (they are not even cheap in the first place!). So just be careful. May I know what kind of business are you thinking to open?