Holding your own book, that you wrote, in your hands is a real treat. It is not tricky to publish it. The hardest part is writing the book. A book does not have to be 600 pages. To self-publish a book, it is better to keep it under 200 pages. Cheaper too. Once you have written your book, then you can find a place to publish it.
Even if you have no cover artwork, you can still publish your own book. Below are some of the sites you could use. I have used Lulu, Blurb, and most recently, Amazon’s Kindle Direct Publishing when I found that Blurb no longer publishes e-books. I wrote about self publishing twice before. I may experiment with other companies.
Amazon’s Kindle Direct Publishing
Apple — you can publish from Pages in the Apple environment.
Dorrance — the oldest self publishing company
You can read about what books I have published on my media page.
And if you want to print more than books, read this article.
Most importantly, if you want to write your own book and publish it, just do it!