If you have computer skills you could operate a web site from your home. Many foreigners do this. They create their ownonline money making systemthat they can control from anywhere in the world including Thailand. How do you make an income from a web site?
For your SUBWAY outlet I wish you and your partners a good start and a lotof success. I've tried only once SUBWAY in Pattaya some months ago but I was disappointed. Staff took out the bread far to early from the oven and and garnishings have not been according to the menu. Sorry ...