Does anyone have resources or links for DevOps or DevSecOps?

Great question and a very important topic!

I suggest starting with the OWASP DevSecOps Guideline. It lays out and explains many things, from an introduction to DevSecOps to a maturity model to what is known as 'Shift Left' security. The same project also has a document repository on GitHub.

Beyond that, I suggest looking at resources from vendors that you trust or work with. For example, I'm a fan of Cloudflare. AWS and Google each offer guidance and skills training for DevSecOps in their environment