The Book/Ebook/Audiobook market has continued to advance and change.
There are also some new markets like AudioBooks which have taken off like a rocket in the last few years.
My own experience has also evolved as I continue to self publish new books and gain more experience with additional sales channels.
There are many books available to tell you how to make money and have fun writing your own book. However, many of these books become out of date quickly as the market evolves.
I will also relate some of my own stories about why I write and the genres I find appealing. Writing your own self-published Books is lots of fun and a way to make good extra money too.