This week I learned how to use Auth0 to authenticate an AngularJS/Node.js app. Auth0 provides a fairly clear tutorial for the initial front- and back-end set-up, but a few of the later steps proved a bit trickier, in part because some of the information in the Auth0 documents for the Google API is a bit out of date. Here is a quick visual guide to supplement that provided by Auth0 once you’ve finished the initial setup.

1. From your Auth0 dashboard, navigate to App/API menu and choose your app.
2. Enter each url with which you want to use your app. Be sure to include the localhost address you use for development, your auth0 domain ending with /login/callback, and the url of your deployed app.
3. Navigate to the Connections/Social menu.
   
4. Turn on Google, then click on it. This will open up a form in which you will need to enter the Client ID and Client Secret you will next retrieve from the Google API.
   
5. Next, go to the Google Developers’ Console. If necessary, sign-up for an account.
6. Create a new project.
   
7. Enter a name, and then create your project.
   
8. Navigate to the Google+ API.
9. Enable Google+, then go back to the main menu.
   
10. Navigate to your credentials and add the OAuth 2.0 client ID.
    
11. Select Web application.
    
12. Enter your auth0 domain into the JavaScript Origins field, and your auth0 callback url into the Redirect URI field, then create.
    
13. Copy/paste the given Client ID and Client Secret into your Auth0 form for the Google API from step 4.
    
    
14. Save, and check out your app! You should now be able to log in to it using Google+.