You will need the following three tools to format your Kindle book using HTML.
1. Text or HTML editor
You may use a plain-text editor, such as Notepad++ or TextEdit, to type in the content of your book. Or you may use an HTML editor that allows direct input of HTML tags. Even IDEs, such as Visual Studio or Eclipse, can be used to compose an HTML document for your Kindle book.
2. Web browser
Since the source of the Kindle book is nothing more than an HTML document, you can use your favorite Web browser to get a rough preview of your work. The Web browser will show fully formatted version of your book except for pagination.
3. Kindle Previewer
The Kindle Previewer for Windows and Mac is a free application provided by Amazon that allows you to preview your book as it would appear on a variety of Kindle devices and applications. The Kindle Previewer can be download from
http://www.amazon.com/gp/feature.html?ie=UTF8&docId=1000765261
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