What are the best ways to learn Kubernetes and Argo CD quickly?

I've just landed a new job that requires me to use Kubernetes and Argo CD alongside Argo Workflows. The truth is, I've never worked with any of these technologies before. My hiring manager knows I'm new to this, and I got hired based more on my potential than my existing knowledge. Now that I have some time between jobs, I'm eager to get ahead and learn. I was thinking of checking out the "Techworld with Nana" crash course on Kubernetes and Argo, and then trying to set up a local cluster on my computer to deploy a web app I'm working on as a learning project (I'll use Vercel for the actual website). I'm looking for any recommendations on the quickest and most engaging ways to become familiar with these tools.