This article will explain you to how to create Google Apps for website or android devices like Facebook apps and its usage. Google provides google apps for use its services in our websites. Google apps allow us to use its services such as Google Plus, Google login, Google maps, Google webmaster tools, Google analytics, Admin SDK, JSON Cloud storage and more. We can create google app in its API Console. Goto https://code.google.com/apis/console/ and follow the instructions..
Step 1: Goto https://code.google.com/apis/console/ and create project like below,
Enter your project name and click Create Project
Step 2: After that you will be taken to the Services tab like below,
Set the status to On for the services which are all you need if you want Google SignIn in your website means On the Google+ API. You can select more than one and it will be added or can remove in future.
Step 3: After the click on the API Access tab, it will show like below,
Click on the Create and OAuth 2.0 client ID.. button to create you Open Authorization client ID and client secret.
Step 3: After you click the above,
it will ask you the Branding Information about your app and project fill the above details and click Next
Step 5: Finally Google API Console will provide you the App details like below,