To implement Log in with Google using Go and WorkOS, you need to follow these steps: first, install the WorkOS Go SDK and set up your environment by storing sensitive values as managed secrets. Next, configure the Google connection by getting the Redirect URI from the WorkOS dashboard and setting it up on the Google side by creating an OAuth app and adding the Redirect URI. After that, add client credentials to WorkOS and configure a redirect URI. Finally, set up the frontend and backend by using React for the frontend and implementing authentication logic in your Go app. Depending on whether you choose to use AuthKit or build your own login box, you will use different APIs. Once authenticated, you can extract the authorization code, exchange it for a token, and handle the callback to complete the authentication process. You may also want to add a custom Google OAuth domain if needed, and then proceed with handling the user's session, implementing logout, adding SAML SSO, implementing access control, provisioning users automatically, and more.