as a student at the university of missouri,Brian Laoruangroch used to sell refurbished cell phones on eBay as a hobby.But when Brian realized how much money he could make by buying,fixing,and reselling phones,he decided to create his local government to found a company called green mobile,which now has local retail stores and about 20 employees. Brian said balancing work and studies was challenging,but he didn't forget to pay attention in class " I was learning important business concepts while i was using them in my own business,"he said