These examples make little sense outside of the tutorial itself.
Slides for the examples will be put up soon.
The simpliest way to get started is to jump into share/vagrant and "vagrant up". Otherwise, if you're hanging around the tutorial sessions, there's a prebuilt VM for it.
The VM is basically a CentOS 6 box with golang installed and OracleASM installed and running on it, if you'd like to build it yourself.