As a beginner of andriod app how will i start first, and is there any software for windows in creating and andriod app?
This Discourse group is dedicated to Apple iOS Development so I would suggest you search for a forum or a community group dedicated to Android development.
Good luck.
If your Company needs any App for their Business or if you are Developing an App for any Business I think you should take help from Professional App Development Company so that they can guide you in a better way or if you are trying to learn there are plenty of software on the internet on which you can develop your app as long as you how to code and search for the solutions you are stuck at.