Whether you are finished with your ebook or are still in the process of writing it, writing a short Ecourse will help you in several ways. You can repurpose information from your ebook into a series of short lessons or tips and send them out to your prospects. This can be set up in an autoresponder sequence to go out daily, weekly, or at whatever intervals you choose. People will get to know you over the course of receiving the information and will be more likely to want to know more.
You can offer a 7 day Ecourse in exchange for someone opting in to your site. This way they will know to expect an email from you every day during this time. On day three or four you can begin adding offers to your own paid courses and programs at the end of each lesson or tip. You can also have each lesson or tip sponsored by an affiliate product or service that your readers would find helpful. These are ways to monetize free Ecourses as you build your list. I encourage you to give this a try. You will be pleasantly surprised at how many people will sign up for a free Ecourse and end up joining your other programs and puchasing your products and services.