I recommend the following books to learn more about the work involved on the Ops side:

https://www.amazon.com/Modern-Linux-Administration-Cutting-E...

https://www.amazon.com/Practice-Cloud-System-Administration-...

https://landing.google.com/sre/book.html

https://www.amazon.com/How-Linux-Works-Superuser-Should/dp/1...

https://www.amazon.com/Effective-Monitoring-Alerting-Web-Ope...

https://www.amazon.com/Ansible-DevOps-Server-configuration-m...

https://www.amazon.com/Terraform-Running-Writing-Infrastruct...

https://www.amazon.com/Amazon-Services-Action-Andreas-Wittig...