Many people start a blog on their area of expertise and then use the blog posts to write articles, hold teleseminars, and to write their ebook. In fact, you can post comments to your blog that are the contents of your ebook. Even though most of your ebook will have come from your blog, people will still be interested in reading it because it will be repackaged into a format that is convenient for them.
If you still have not started your blog, go over to Typepad and sign up for a 30 day free trial. If you are in my ebook writing program, I will give you a 90 day free trial and 20% off for life on your monthly fees. What you save during the first year will pay for my e-course. For more information about the course go to Ebook Writing Ecourse and decide when you want to write your ebook.