What do you need to open up a corner store?

First find yourself a nice strong sack, then find an unoccupied street corner, sneak up on it very quietly, be careful street corners can fight back, throw the sack over it, tie it tightly, put it a nice dark room.

Hightail it down to your nearest SHOP shop, pick and purchase the shop you like.

Pick up the corner from the dark room, it should be nice and docile by now.

Get back to the empty corner as quick as you can, before someone else finds it.

Unpack your newly purchased shop.

Open the door

Quickly untie sack, and empty it through the door.

Say the magic Words 'ThisWikianswerssupervisorisanidiot'.

Hey Presto a new street corner shop.