If we look at the distributing's history, if a creator needed to independently publish, they needed to contribute a huge number of dollars with a supposed "vanity" press, or generally figure out how to turn into a small publisher.
Similarly, as conventional publishing has changed because of the ascent of ebooks, the present independently publishing business sector has changed too. Most self-published writers earn the main part of their income from ebook deals.
You have to write a book and search for a publisher to deal with him. If you have good contacts that it will be easier for you to publish your book otherwise you have to make more efforts.
Amazon likewise offers a chance to the individuals who need to publish their book. Amazon's free Kindle Direct Publishing is independently publishing and costs nothing. You open an account on their site which is free. Then you can upload your book after doing the necessary formatting. And finally, start selling your book.