hint for help, help for commands. Up arrow repeats.
Commands and output match real kubectl and Linux tools. The cluster is simulated in your browser, so mistakes cost nothing and reset in one click.
Each lab matches the Hands-On Lab in the same chapter of Kubernetes Security Made Clear. Read the chapter, then practice here. The coach points you back to the right section when you get stuck.
You reach nodes with ssh. These labs use docker exec <node>, exactly like the book's kind cluster. The commands you run once inside are the same.