Update docs/django/first-steps-with-django.rst

Clarify that calling tasks requires the django application's settings.
The necessary configuration can be achieved by either using the
manage.py shell or importing the application's settings. Without either
of these, calling 'delay' will raise socket errors (and potentially
other exceptions) if you configuration differs from the default.

docs/django/first-steps-with-django.rst

@@ -123,16 +123,23 @@ use the help command:
 Calling our task
 ================
 
-Now that the worker is running, open up a new terminal to actually
-call the task you defined::
+Now that the worker is running, open up a new python interactive shell
+with ``python manage.py shell`` to actually call the task you defined::
 
     >>> from celerytest.tasks import add
 
     >>> add.delay(2, 2)
 
 
-The ``delay`` method is a handy shortcut to the ``apply_async`` method which
-enables you to have greater control of the task execution.
+Note that if you open a regular python shell by simply running ``python``
+you will need to import your Django application's settings by running::
+
+    # Replace 'myproject' with your project's name
+    >>> from myproject import settings
+
+
+The ``delay`` method used above is a handy shortcut to the ``apply_async`` 
+method which enables you to have greater control of the task execution.
 To read more about calling tasks, including specifying the time at which
 the task should be processed see :ref:`guide-calling`.