git clone git@github.com:msonnabaum/drupalcon-training-chef-repo.git
cd drupalcon-training-chef-repo
vagrant up
This will take a decent amount of time as the virtual machine is downloaded and the Chef configuration is applied. When it is done, you can connect to the server using vagrant ssh.
Once the server is running, you can navigate to http://172.22.22.22/ to test Apache and http://172.22.22.22:8080/ to test Varnish.