MicroK8s can be a very simple, efficient, and powerful way to run a Kubernetes cluster. It installs as a snap.
If you want to install MicroK8s, see the following link: https://microk8s.io/#install-microk8s
If you want to add nodes to the cluster see this link: https://microk8s.io/docs/clustering
I recommend making aliases to Kubernetes commands, for example making an alias from microk8s to kubectl:
sudo snap alias microk8s.kubectl kubectl
Also, you will want to give your user account permissions to MicroK8s so you don't have to constantly type sudo:
sudo usermod -aG microk8s <user_account>
Note: If Kubernetes doesn't recognize your command (or gives TCP 127.0.0.1 errors) then make sure you preface the command with
microk8s.