With Amazon KDP it is very easy to publish a book. It is a bit tricky to start with, but no more difficult than using Ebay, or Facebook.
You can use your existing Amazon Account so need to create a new one. The book is then simple written in a word document (use Libre Office for Free) and then uploaded on the KDP publishing platform.
You book is then listed for sale on Amazon to a Global Audience.
It should be noted that just as any old tat will not sell on EBay, your book will need to be:
- Look Nice
- Well Written
In order to gain traction and sell copies. Publishing a bad book is not a good move, just a few bad reviews and you will sunk, before you have started.