Hi Arun, I understand what you need and I can help you sell you book. First, I would love to see the book, read it and write 5 great reviews for the book. We can post these reviews under different names to Amazon once it is published.
Secondly, I will write a blog post about the book and submit in relevant education blogs and sites.
Lastly, I will promote the book link in Amazon to educational facebook and twitter groups with catchy headlines and words.
We can discuss more in PM, thanks.