FYI: All the courses by Google Cloud are available on Coursera and you can audit them for free but you will not get any certificate.
1.
https://www.coursera.org/learn/gcp-exploring-preparing-data-bigquery
2.
https://www.coursera.org/learn/image-understanding-tensorflow-gcp
3.
https://www.coursera.org/learn/gcp-production-ml-systems
4.
https://www.coursera.org/learn/end-to-end-ml-tensorflow-gcp