Did you know that you can sign up for Amazon’s affiliate program and use your affiliate code to link to your book to make a little extra money? You should use your affiliate link wherever you link to your book on Amazon, such as on your website or in your newsletter. Then, when someone clicks and buys your book, you make a small commission from Amazon. This is separate from the money you make as the author of the book.
Plus, as a bonus, if they buy something else on Amazon after clicking your link, you also get a commission on that sale, as long as it is a qualifying product. I had one author tell me that someone bought their book, plus a big screen TV. He got a commission payment for the TV in addition to the one for his book. They do not even have to buy your book for you to get commission on what they buy after clicking on your link.
You should use your affiliate link for any book you review or recommend on your site, not just your own book.
To start, you should have a website. Then sign up for Amazon’s affiliate program at https://affiliate-program.amazon.com/. Once approved you can use their link builder to find your book and they will give you the link to use. Do this for any book that you talk about. You will probably not get rich, but every penny counts!