No matter if you write for a hobby or you do wish to market your knowledge as an expert in your field; then publishing your own Kindle books makes sense.
Maybe you are a someone who enjoys writing short stories, manuals of how to do something or even writing poems; Kindle book publishing gives you the opportunity to share your skills with the rest of the world.
I myself have published a number of books which are now available on the Amazon Kindle book platform. Some of my books are also available as a paperback and also available through Amazon and some other book retailers.
My Kindle publishing class gives you an overview on how easy and simple this self-publishing process can be.