- Go to https://code.google.com/apis/console/ and create a new project.
- Add your Project name.
- Click on "Credentials" from the left side menu then click on the "OAuth consent screen" tab.
- Fill "Product name shown to users", "Privacy policy URL" and "Terms of service URL" fields
- Click on "Save" button after that you will be redirected to another page.
- Select "Web Application" under "Application type"
- Scroll down and fill "Authorized redirect URIs" with http://yourdomain.com/social-auth/callback/google/ and make sure to replace "yourdomain.com" with your actual domain.
- Click on the "Create" button
- Then you will get your "Client ID" and "Client Secret"
- Click on "Library" from the left side menu then search for "Google+ API" and click on it.
- Beside "Google+ API" click on "ENABLE"
- That's it.