Can you recommend me a good Kubernetes guide for beginners?

What I'm looking is tutorial or beginner's guide on how to install highly scalable cluster on Digital Ocean using Kubernetes. I've been looking for that on Google and the best thing I've found is a video tutorial on youtube https://www.youtube.com/watch?v=sLwV_m7D_ks but there is no sound which is a problem because I want to understand better.

So if someone can recommend a good tutorial for beginners, it doesnt have to be related just to Digital Ocean, just Kubernetes in general, I'd appreciate it.

Best Regards