To start with, the book is available to purchase as ebook (PDF and ePub). The printed version will be released a couple of weeks from now, but you can preorder it now.
Please note that you can pre-order the printed version at a discounted price during a limited period of time. Although you will have to wait a couple of weeks to receive the printed version, you will get the ebook immediately as it is included in the price.
To get a taste of the book, you can download the first chapter of the book for free.
The presentation below will give you an idea what the book is about.