Raghav Sood, born April 16, 1997, is a young Android developer. He started working with computer seriously after learning HTML, CSS and Javascript while making a website at the age of nine. Over the next three years he developed several websites and quite a few desktop applications. Since then he has learnt several programming languages, including PHP, Java, x86 assembly, PERL and Python. In February, 2011 he received his first Android device, an LG Optimus One running Froyo. The next day he began work on his first Android app. He is currently the owner of an Android tutorial site, an author on the Android Activist site and the developer of 12 Android apps. He regularly takes part in the android-developers Google Group, trying to help whoever he can. Raghav also enjoys reading, photography and robotics. He currently resides in New Delhi, India. This book is his first ever.