A tutorial is included in the full PsyNeuLink package, available from the PyPi Download or Github Repository. In addition, the following provides access to a browser-enabled standalone version of the tutorial.
Go to: mybinder.org
Paste into the URL field: https://github.com/PrincetonUniversity/PsyNeuLink
In the branch field: master
In the file path field: tutorial
Click launch and an interactive notebook will be built in approximately a minute.