This book assumes you already have a core understanding of programming or already familiar with using the GDScript programming language. If you have already gone through the GDScript Programming: Hands-on learning with projects book, you should have more than enough knowledge to go through this book. In this book you will learn about the native libraries that are available to you, creating keys, signing your application, requesting permissions, how to use some of androids built in features such as notifications and using images from the users camera and gallery. You'll also learn about setting up and connecting your application to the google play services to create achievements, user sign in and leaderboards. By the end of this book you'll have created your own android application and have a strong knowledge on how to implement different kinds of features found on android devices.