If you have downloaded the Puppet Learning VM (Virtual Machine) and you are ready to start learning about Puppet via the quests, here are some useful commands and tips to help you think about before you get started.
This is instructions on how you can connect to your Puppet Learning Virtual Machine with SSH.
If you're new to SSH, SSH = Secure Shell.
"Secure Shell is a cryptographic network protocol for operating network services securely over an unsecured network. Typical applications include remote command-line, login, and remote command execution, but any network service can be secured with SSH". - Wikipedia