If you have written your own manuscript, whether it be a novel, a self-help book, or even a book of poetry, Amazon will publish your work under their Kindle Direct Publishing feature.  Author Richard Trigilio published his books using this service and has directly assisted other authors in doing the same.  If you would like similar assistance for your project, describe your effort to date and Richard will respond with comments to get you going, as well as provide an outline of what he can do to help keep your project on track.  Just respond using the "Contacts" page indicating that you are interested in publishing assistance to get the process started.  Comments from other authors Richard has helped can be provided on request.