Good example

http://www.asiaone.com/News/Education/Story/A1Story20100104-189622.html

Coded from article :
After doing extensive homework for close to a year, the duo decided to scale down the original plan to set up a coffee joint outside school to one on campus instead. 'We surveyed and analysed the market in our school,' said Ernest. 'We had schoolmates who considered bringing other cafes into the school campus, and we felt we could establish our presence here.'

The learning gradient was steep. The duo spent months contacting suppliers, sampling and creating their own recipes. 'We had to taste various pastries from different suppliers, and spent days simply drinking coffee,' said Samantha. 'We wanted our coffee to taste unique. In fact, every drink on our menu was put down after much tasting and deliberation.'
'It sounds good, but too much of a good thing can have a negative effect,' said Ernest, wincing slightly at the memory. 'It was worth every moment, though.'

The duo also conducted surveys and interviews with schoolmates and cafe owners to determine what prices to set for their drinks. 'We had different factors to consider. Since our cafe is on campus, we had to ensure that good quality came with reasonable prices,' said Samantha. Generally, their drinks sell for half the price of those at popular coffee joints outside.

The duo invested $21,000 from their own pockets in the venture, including funds provided by their families. Apart from parental support, they also received a $3,000 grant under Ngee Ann Polytechnic's EnterpriZe! Scheme, an incentive funding programme aimed at helping students start their own businesses.
Samantha's best memory of the journey was seeing the newly renovated 15.36 square metre space. 'The entire process took close to three months. It was tiring at times, especially when things didn't go the way we hoped,' she admitted.

There were times when orders were not followed through, and new suppliers had to be found on tight deadlines.