You will need to acquire two files: a VirtualBox installer and the Tutorial VM.

If you are at the tutorial now, DO NOT use the wifi to download any large files. We will have CDs and USB keys with both files. Copy the VirtualBox installer for your OS type (if needed), then copy the Tutorial VM (ons-2013-tutorial.ova), then pass the key to a neighbor who needs it.

After you have acquired VirtualBox, install it, then go to the next section, Set Up Virtual Machine to verify that the VM is working on your platform.