One of my favorite sites, Squidoo, has some good content pages on writing and planning businesses.

At Squidoo they have sample business plans, ideas on writing business plans, writing marketing plans, business planning for online marketing, and specialty plans for small and micro businesses.

By using key phrases you can define your search much more and get to what you actually want -- because there is so much information there you need to be a little picky to get what you actually want. Here are some key phrases that might help you in digging for information on the Squidoo site: business plan, business, smallbusiness, business plan pro, small business plan, sample business plan, businessplan, marketing plan, business start up, Free sample business plan.

Happy hunting!