Cool, learning about django:
20161031/http://stackoverflow.com/questions/21069950/how-to-extend-the-django-user-model#21070846
20161031/https://docs.djangoproject.com/en/1.10/topics/auth/
20161031/https://docs.djangoproject.com/en/1.10/ref/models/instances/#django.db.models.Model.save
20161031/https://docs.djangoproject.com/en/1.10/topics/db/models/
20161031/https://docs.djangoproject.com/en/1.10/ref/models/options/#table-names
20161031/https://docs.djangoproject.com/en/1.10/ref/databases/
20161031/https://docs.djangoproject.com/en/1.10/ref/models/fields/
Create an object only once, after another object gets created:
20161031/http://stackoverflow.com/questions/21623061/django-create-object#21623796
Basically, you modify the save() method with the appropriate hooks.
If the object does not exist, create it. Else, do nothing.