Ask HN: Resources to Learn DevOps?

I've realized the most important skill in the age of AI is DevOps. I have some experience with spinning up servers and hosting my apps, but I want to learn more about production-ready approaches to load balancing, server management, structuring a project, containerization, distribution, API design, concurrency done right, etc.

I've picked up some of each as I went through different projects but I'm wondering if there are resources that rigorously teach this stuff.