I recently learned about Kubernetes with this book - Getting Started with Kubernetes and I highly recommend it if you want to learn about the it.
Well written, and great introduction to dip your toes in the water of the next-generation container technology!
The book is written to use Google Cloud Platform, but Google kindly offers you up to 60 days, $300 amount of free-tier account.
So if you read this book within 60 days of the sign-up, it is not a problem at all.
I gave this book a 4-stars - ⭐️⭐️⭐️⭐️
Enjoy your learning😘