Dedication

This book is dedicated to all of you who have generously made available your resources and ideas so that all of us could learn and improve.

This book is also dedicated to all of you who power, edit and help maintain sites like Wikipedia (Wikimedia Media Foundation), Stack exchange, Quora and other places where you can seek information easily.

I have also to thank Vinayak, Archana, Austin, and Jayanti for their sufferance as this book written on my personal time.