I’ve published a few books on Kindle. While it won’t make you rich (unless you are very lucky) it will give you an enormous feeling of satisfaction for making someone happy or just helping a stranger who would find your books useful.
So what did I do?
First I came up with something I felt I could write about. I love my Android phone and was always trying out apps so I had my idea.
I then needed to format the book so it would look good in an ebook. Remember there are no page numbers in an ebook because everyone can change the size of the text and even spacings for comfort, so a page will have a different number of words for different people. I would recommend the Smashwords Style Guide (available from Smashwords.com funnily enough).
Another thing to note about is formatting, if you are using Microsoft Word then try to use the styles function. Use this to space out paragraphs, headings etc. Your book will look so much better. Also this will have the added benefit of the ability to change all your headings in your entire book by changing one style.
Yet another aside. Think about how your images will look in greyscale. Kindles on tablets and phones are usually in colour but the ereaders are in grey. Even if they bring out a colour Kindle there are millions of the black and white versions which will be out there for a looooonnnng time.
So you have formatted the book, what next?
Upload the book to Kindle Direct Publishing of course. Remember to pay special attention to the tags as that is how people will find your book once it is published.
Think hard about pricing. If you are writing a non-fiction book then have a look at similar books in the field you have chosen. How long are they? How much are they? Try to get the balance so that you are offering value for money.
For a fiction book, if the book took a lot of effort and a long time with a huge amount of editing then I believe selling for less than $2.99 is selling yourself short. I think more than this for a first time author is hubris.
Wait a couple of days and you are set.
Of course this is not the definitive guide to publishing with KDP as this would be a lot longer than a blog post should be, but it should give you an overview.