Corporate Information (corporateinformation.com): Features information summaries on over 350,000 companies in the U.S. and abroad for competitive analysis.
Besides, your friends may be 100% behind you in your new venture, but, in case you are hoping to involve others who have actual money to invest, you may need to be able to make a convincing case. Wouldn't it be nice to have anticipated possible questions and be ready with plausible answers? If you are risking your own money, that is perhaps even a stronger reason to do some indispensable planning.
Carrying on with the example of a coffee shop, a business plan consultant will figure out what the best location would be. They already know coffee shops do well in areas with a certain demographic in place. These include students and workers, who are within close proximity to book stores.
This may be nothing more than arranging training for employees or setting a timeline for goals to be met. It is not unusual, however, to find them becoming a temporary presence in different office activities.