The Need for Business Registration

ChinChic

Hi all, though i'm not quite ready to quit my full time job, i'm planning to start a small retail business and eventually i hope to develop this small biz into a social enterprise

i'm now in the process of getting the samples of my target products from an overseas supplier...

While i'll read up business govt portal for all the admin details & procedures,

i would like to find out do i need to do business registration for the following:

1) selling at bazaar - Yes / No

2) selling at fleamarkets - Yes / No

3) rent a space or a display corner at a retail shop - Yes / No

4) share a space with a pushcart owner (not co-rent, something like the other party sub-let) - Yes / No

5) selling my items at a shop on consignment arrangement - Yes / No

6) buy supplies fr wholesalers from overseas - Yes / No

7) buy supplies fr local wholeesalers - Yes / No

8) sell my items by renting a pushcart from shopping malls - Yes / No

can someone be so kind as to enlighten me please...