Although there were many books already available that are compatible with this book reader, Amazon have opened things up so that ANYBODY can upload a book to their Kindle system for others to purchase, download and read on their own Kindle device.
This is great news for those who have written their own book, got a ghost writer to write one for them or have the aforementioned PLR books that they have the rights to do what they like with.
Why is it great news? Read on ...
Well, if you have your own book, why not upload it into the Amazon Kindle book store?
It's free and you just name your price ready to take about 30% of all sales. As Amazon do all the promoting for you, effectively, you don't mind only getting 30% otherwise you wouldn't be able to afford to market it yourself. Using Amazon's system, you'll get sales from the millions of customers who search through the Amazon Kindle library.
If you have had your book written for you, again, upload it to Amazon Kindle and get it selling.
As for PLR, you can normally rewrite, alter, improve, use you name as author etc. and then upload the finished article to Amazon Kindle to start profiting from your hard work.
Another idea is that you can use 'out of copyright' books. These are books from the public domain and can be published by you without any further permissions.
So, how do you go about all this?