Looking at a Career jump into DevOps and advice or suggested reading
I do not think that there is a single correct piece of advice for such a broad question, but here are my thoughts your situation:

As a starting point look at your current workflow, processes, and technologies being used at the company and then research some tools
(Jenkins, Kubernetes, Docker, Grafana, Ansible, Kubana etc)
or techniques(writing your own scripts or programs) that might be useful to your company or any projects you are working on.

I would also suggest maybe attending local DevOps meetups or talks in your area for more exposure.