Sphinx, the best practices

I just started to use Sphinx tool to generate a documentation for my code. But I'm a bit confused because it's not as easy as I expected. I create the Sphinx doc using:

sphinx-quickstart

and then I create my *.rst files into the "source" folder. Seems like I need to create a *.rst file for each module I want to create a document for. For test.py, I create test.rst. Inside test.rst, I have:

.. automodule:: test
    :members:
    :show-inheritance:

Then inside test.py, I have:

"""
.. module:: test
   :platform: Unix, Windows
   :synopsis: A useful module indeed.
"""

Then I generate the documentation using:

sphinx-build -b html source/ build/

Everything works as expected, but the problem is that it's not as easy as I expected. I guess that there must be an easier way to do it with skipping some of these steps. I wonder if there is any way to generate a documentation for all the modules inside a package instead of generating a *.rst file for each module.

Thanks.