To self-publish a book, start by writing and editing your manuscript. Make sure it is completely formatted. Also, get a professional book cover and interior design. Next, you need to choose a self-publishing platform like Amazon KDP or Ingram Spark,. You can even consult with the book publisher, who can help you with this, without affecting the rights. Structure your book for print and digital distribution. You also need to write a compelling book description and keywords, set your price and royalties, upload your files and then promote and market your book to reach readers. You can even use social media to reach the target audience.