At work we are trying to implement some network security, and I feel lost in the discussion. So perhaps this might be a good starting point?

I have also noticed that I learn best by doing things. For e.g., many many years ago I struggled to understand OAuth protocol, or even load balancing concepts by reading tons and tons of articles on them. A few days later my understanding would vanish into thin air. Then I had to implement this for work -- I struggled but I was not only able to re-learn it, actually put it to use but also retain the theoretical concepts very well.

So I am looking to do something similar. But I don't have the luxury to be hands on at work because the security stuff would be handled by a different team.

That's why I am looking for some tutorials that would guide me but actually make me do something in a sandbox environment.