Comment by bharathwaaj

The best way to start is to sign up for an account and start using it. AWS comes with different services based on requirements. Start an EC2 instance and access it from command line and deploy a web server from there. You don't need anything else to learn in that. Start building your app locally and deploy it there. You'll start learning in that process. If you are stuck use google or search stackoverflow.com. Or question in their support forums. They'll respond with a good solution.