In Google Cloud, create a project and enable the API.
Make a service account and download its JSON key.
Add the service account email as a user with Full permission.
Enter your property, for example sc-domain:yoursite.com, and upload the JSON file.
Add your domain, upload one small file, press Verify.
Read the guide →Tell search engines about new pages instead of waiting to be found.
Read the guide →Pages with almost no real text get dropped by Google. Here is the fix.
Read the guide →Just your domain. We find the pages Google is likely to skip. About 10 seconds.