I've been doing some research on publishing a Kindle eBook for Amazon. One of my businesses is a mobile food business and I get a lot of questions from people all over the United States who email me questions on how we got started with a food truck. Occasionally I take the time, sit down and answer their emails but more recently I thought that writing an ebook on starting and running a food truck makes more sense. Much easier to send out a link with my ebook. And it gives me another source of writing income.
I found great information in this blog post by Paul Jun.
Have you considered turning your expertise into an eBook? If you have written an eBook what was the easiest and hardest part of your experience? Although this is still in the planning stages I feel writing the book will be a good experiment to get a feel for writing eBooks.