<template name="configureLoginServiceDialogForGoogle">
  <p>
    First, you'll need to get a Google Client ID. Follow these steps:
  </p>
  <ol>
    <li>
      Visit <a href="https://console.developers.google.com/" target="blank">https://console.developers.google.com/</a>
    </li>
    <li>
      "Create Project", if needed. Wait for Google to finish provisioning.
    </li>
    <li>
      On the left sidebar, go to "APIs &amp; auth" and, underneath, "Consent Screen". Make sure to enter an email address and a product name, and save.
    </li>
    <li>
      On the left sidebar, go to "APIs &amp; auth" and then, "Credentials". "Create New Client ID", then select "Web application" as the type.
    </li>
    <li>
     Set Authorized Javascript Origins to: <span class="url">{{siteUrl}}</span>
    </li>
    <li>
      Set Authorized Redirect URI to: <span class="url">{{siteUrl}}_oauth/google</span>
    </li>
    <li>
      Finish by clicking "Create Client ID".
    </li>
  </ol>
</template>

<template name="configureLoginServiceDialogForGoogle">
  <p>
    First, you'll need to get a Google Client ID. Follow these steps:
  </p>
  <ol>
    <li>
      Visit <a href="https://console.developers.google.com/" target="blank">https://console.developers.google.com/</a>
    </li>
    <li>
      "Create Project", if needed. Wait for Google to finish provisioning.
    </li>
    <li>
      On the left sidebar, go to "Credentials" and, on the right, "OAuth Consent Screen". Make sure to enter an email address and a product name, and save.
    </li>
    <li>
      On the left sidebar, go to "Credentials". Press the "Create credentials" button, then select "Web application" as the type.
    </li>
    <li>
     Set Authorized Javascript Origins to: <span class="url">{{siteUrl}}</span>
    </li>
    <li>
      Set Authorized Redirect URI to: <span class="url">{{siteUrl}}_oauth/google</span>
    </li>
    <li>
      Finish by clicking "Create".
    </li>
  </ol>
</template>

Update Google Client ID instructions
Update Google Client ID instructions

The Google API Manager has changed it's interface since this was last updated. I've corrected the instructions with as little change as possible to accurately describe the current workflow.