U.S. Census Bureau (census.gov): A source for a variety of useful statistics, especially the Economic Census that comes out every 5 years.
After doing this, they will give recommendations based on what they find. If there are coffee shops already in place, one recommendation they might make would be to include free Wi-Fi as a way to bring in more customers.
They can present you with the very best prospect of being successful - if you happen to be looking to acquire loans or even just in case you simply need a high quality reliable schedule to adopt while starting out, making use of a professional to counsel you and additionally compose your plan for you might give you the greatest chance for financial success.
If you know all of these except for Marketing, say, then this is where you will need to invest some time and effort. You can find a wealth of information by utilizing the traditional data sources such as chambers of commerce, major cities' websites, trade associations, the US Census Bureau, trade journals, magazine and online articles and advertising, etc. Performing keyword searches on Google, or Ask will bring up websites to check out. Following are some places to start:
business plan articles
business plan creator
business plan consultants