The Packet Optical Tutorial is recommended for those who wish to get a feel for the features implemented for this use case, without the work of setting the environment up from scratch.
The Packet Optical Dev Environment is recommended for developers, and those interested in building an environment similar to the one used by the developers working on this use case. The Metro Network Emulation is a good next step for those interested in developing/testing for E-CORD, the logical next step from the Converged Packet Optical use case.