Installing ingress controller, services and pods on K8s via Ansible
Since your new in this platform, I would suggest you to explore in the bellow order (assuming you want to use nginx as the load balancer ingress controller):
1- This tutorial is the most complete to get started with k8s. I strongly suggest you to follow it through to understand the jargon and the working components before going to the next steps.
2- Take a look at this example where they go through creating an nginx application in a k8s cluster.
3- Look at this tutorial where the author describes the key concepts and working operation of an ingress controller.
4- Finally, look at this to start setting up your ingress controller from the official doc page. Other resources are available to allow you to setup as much as you'd like.
Extra: Here is the official k8s kubectl cheat sheet.