on Just Publishing Advice:
If you are a new author, you have plenty of choices of free self-publishing companies to publish your book.
It is very easy to publish an ebook today and make it available to the world.
You can also publish a paperback book using print-on-demand services.
There’s nothing to stop you from publishing your new book, and yes, you can do it for free.
The best choices for ebooks
Free paperback self-publishing