KRaft

Navigate to the cluster creation page. There, create a cluster with a name and TLS-SAN. The cluster name is, unsurprisingly, required. For those not too knowledgeable about Kubernetes, the TLS-SAN field is if you want to add a custom URL to access your cluster. A default URL will be generated as k-clustername.kraftcloud.dev with all the DNS entries needed for you to access your newly made cluster.

This segment is only relevant if you populated the TLS-SAN field with a custom URL. In order to finish configuring your custom entrypoint, you need to go to the cluster details page, and grab the randomly generated URL. Then create a CNAME record for your domain, pointing to mine.

It will take a few minutes for the cluster to be created, initialise, and be ready for use. Tragically I do not have a status field to tell you about what stage the cluster is in. However, after waiting maybe 2 minutes, you can try downloading your kubeconfig file from the cluster management page. This kubeconfig file gives you the credentials and configuration needed to interact with your cluster. The server field is set to example-endpoint.kraftcloud.dev by default, but you can replace it by your own domain if configured.

Everything you do on your cluster will involve kubectl, a command line tool which communicates with the kubernetes API server. Kubectl is the only item you need to install locally, and you can refer to the guide here.
Once you have kubectl installed (verified by `kubectl version` in the terminal), you need to make sure it can get your kubeconfig file. This is done by setting the KUBECONFIG environment variable to the absolute path of the downloaded file (eg: /home/alex/Downloads/kubeconfig-dl.yaml). Alternatively you can move the file to ~/.kube/config which kubectl checks by default anyways. Refer to the above guide for non-Linux systems.

A feature in open beta right now is workspaces. A workspace is a container with all the tools you could want to work with, including but not limited to: kubectl, kubecolor, kubectl completion, fish, and k9s. You can load into a workspace from the cluster view page. You have to extend the cluster view and will find a button to load it.
The workspace will load you into a terminal on a new tab. It might take a second for it to load, and if you have a cursor visible but no terminal prompt, you can try pressing enter or ctrl+c to get your prompt back. Note that there is a timeout on inactivity and if it passes, you will have to load the workspace again from the KRaft page.