A couple of good sources for any start-up business:
1.) Your local Chamber of Commerce, most will usually have seminars and/or individulized help with getting started and writing a business plan as well as networking oppertunities.
2.) Check and see if your county has a Small Business Devolopment Center, many offer classes in getting started as well as a pluthera of resources benificial in helping with the planning and development of a business.
3.) what beemerboy said