An author who decides to self-publish basically becomes their own publisher. They are in control of every aspect of their book publishing process. They have options from hiring proofreading editors to hiring self publishing companies to edit the final text. The author provide the funds required to publish the book, as well as the cover art. The author is responsible for marketing and distributing the book, filling orders, and running advertising campaigns. Some self publishing companies offer marketing packages for advertising purposes for a small fee. The author receives most of the royalties if not all. They keep their book rights. They are in control of every stage of publishing their book, from writing the manuscript to marketing and distribution.