Before starting a company you should ask some people that are in the business about everything -- They might be expensive, but that's really worth it, people do need a good marketing plan strategy before starting a company.
We've been busy on school with marketing, and in those 467 pages I've learned a lot of things, but still that's only a small part from how a company should work (marketing is a little piece for a company, but almost everybody knows that).
But you can always try
