Clean up and complete RTD documentation

readthedocs/extra/troubleshooting/enable-logging.rst

@@ -1,15 +1,18 @@
 ================
-Enable Logging
+Enabling Logging
 ================
 
 Telethon makes use of the `logging`__ module, and you can enable it as follows:
 
-    .. code-block:: python
+.. code:: python
 
-        import logging
-        logging.basicConfig(level=logging.DEBUG)
+    import logging
+    logging.basicConfig(level=logging.DEBUG)
 
-You can also use it in your own project very easily:
+The library has the `NullHandler`__ added by default so that no log calls
+will be printed unless you explicitly enable it.
+
+You can also `use the module`__ on your own project very easily:
 
     .. code-block:: python
 
@@ -21,4 +24,17 @@ You can also use it in your own project very easily:
         logger.warning('This is a warning!')
 
 
-__ https://docs.python.org/3/library/logging.html
+If you want to enable ``logging`` for your project *but* use a different
+log level for the library:
+
+    .. code-block:: python
+
+        import logging
+        logging.basicConfig(level=logging.DEBUG)
+        # For instance, show only warnings and above
+        logging.getLogger('telethon').setLevel(level=logging.WARNING)
+
+
+__ https://docs.python.org/3/library/logging.html
+__ https://docs.python.org/3/howto/logging.html#configuring-logging-for-a-library
+__ https://docs.python.org/3/howto/logging.html