There are a number of ways of going about the process of writing a good business plan. One of the most tried and time tested ways that works well is using a business plan template.
Press for Success : Far be it from me to dampen your enthusiasm, but you should give yourself every opportunity for success. That's what the planning part of the process of creating your business plan will do. By the time you have pressed your way through it, you will not merely have some neatly arranged document to keep on file, you will have a working tool that addresses the essential factors that influence your future.
Corporate Information (corporateinformation.com): Features information summaries on over 350,000 companies in the U.S. and abroad for competitive analysis.
Industry Analysis - How does your product or service compare with what is currently on the market? What is the trend in the overall industry? What have been the total sales in this industry over the previous 3 to 5 years? What new products or technologies have had the biggest impact on this industry recently? What is the future outlook for these and what trends are emerging? Who are the competitors, where are they located, and how are they doing? What advantage do you offer over them? Who is buying this product or service now? Describe the typical customer for this product or service.