Add document about connecting to localhost (#20534)

* Add document about connecting to localhost

* Update intro_getting_started.rst

* Update intro_getting_started.rst

Edited.

* Added description about ansible_python_interpreter

docs/docsite/rst/intro_getting_started.rst

@@ -53,6 +53,7 @@ public SSH key should be located in ``authorized_keys`` on those systems::
     aserver.example.org
     bserver.example.org
    
+   
 This is an inventory file, which is also explained in greater depth here:  :doc:`intro_inventory`.
 
 We'll assume you are using SSH keys for authentication.  To set up SSH agent to avoid retyping passwords, you can
@@ -107,6 +108,20 @@ explore what you can do with different modules, and to learn about the Ansible
 also has powerful configuration management and deployment features.  There's more to
 explore, but you already have a fully working infrastructure!
 
+Tips
+
+When running commands, you can specify the local server by using "localhost" or "127.0.0.1" for the server name.
+
+Example:
+
+.. code-block:: bash
+
+    $ ansible localhost -m ping -e 'ansible_python_interpreter="/usr/bin/env python"'
+
+You can specify localhost explicitly by adding this to your inventory file::
+
+    localhost ansible_connection=local ansible_python_interpreter="/usr/bin/env python"
+
 .. _a_note_about_host_key_checking:
 
 Host Key Checking