can anyone guide me how i expand my business

I am a housewife..and just started my small business. I bring items from jaipur and sell here in my apartment ,Bangalore. As i m small entrepreneur, I do not have much money to give rent, Can anyone suggest me , how I can expand my business without spending much? Can i put my stall free of cost at different IT companies or offices? is it possible? please guide me..Or in public place if i want to put how much i have to spend. Through online how can i sell my product? please guide me as early as possible.