Hey all, pretty new to rancher, can someone point me to some tutorials about setting up rancher. I mean from the start, I have ubuntu server and docker what's next? What else I need to install?

You have the ubuntu server and docker. Maybe this document what you want. https://docs.ranchermanager.rancher.io/pages-for-subheaders/rancher-on-a-single-node-with-docker I would install rancher via CLI

sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 --privileged rancher/rancher

• get container id & get rancher default password

docker ps --format '{{.ID}}' | awk '{print $1}' | xargs -i docker logs  {}  2>&1 | grep "Bootstrap Password:"| awk '{print $6}'

Thanks @breezy-church-69414, that's done, but when I try to create a new cluster I'm getting some errors.

do i need to install K3s before i install rancher ? 😄

As far as I know, Rancher would deploy it to your node.

because kubectl dont work, and when i try to install k3s i get issue maybe the problem is there not the rancher manager