We have Facebook working great. Let's authenticate to Google now. The process will be very similar, so this shouldn't be too hard. The first thing we have to do is register an application with Google.
Go to https://console.developers.google.com/project. This page will list out all the applications that you have created with Google before. This includes any App Engine or OpenID projects. I have tried a few different services with Google, so I have a few projects here.
We want to click on the CREATE PROJECT button shown in the following screenshot:
A New Project dialog will pop up. Filling this out will be similar to ...