This video introduces developers to building apps on Google App Engine. For more in-depth information and deep-dive technical sessions, come to Google I/O, ...
From Google Developers
You need eclipse with WTP support, I have configured eclipse with Google Plugin and JAVA App engine SDK, So you do that and later you follow this tutorial. :)
From Sudhir Belagali
Google App Engine makes it easy to focus on your code, while letting us manage your infrastructure.
From Google Cloud Platform