Created Common Example Steps (markdown)

Common-Example-Steps.md

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+All the [examples](Examples) assume that you have successfully created a client and you're authorized as follows:
+
+```python
+from telethon import TelegramClient
+
+# Use your own values here
+api_id = 12345
+api_hash = '0123456789abcdef0123456789abcdef'
+phone_number = '+34600000000'
+
+client = TelegramClient('some_name', api_id, api_hash)
+client.connect()  # Must return True, otherwise, try again
+
+if not client.is_user_authorized():
+    client.send_code_request(phone_number)
+    # .sign_in() may raise PhoneNumberUnoccupiedError
+    # In that case, you need to call .sign_up() to get a new account
+    client.sign_in(phone_number, input('Enter code: '))
+
+# The `client´ is now ready
+```
+
+Although Python will probably clean up the resources used by the `TelegramClient`, you should always `.disconnect()` it once you're done:
+```python
+try:
+    # Code using the client goes here
+except:
+    # No matter what happens, always disconnect in the end
+    client.disconnect()
+```
+
+If the examples aren't enough, you're strongly advised to read the source code for the [`InteractiveTelegramClient`](https://github.com/LonamiWebs/Telethon/blob/master/telethon_examples/interactive_telegram_client.py) for an overview on how you could build your next script. This example shows a basic usage more than enough in most cases. Even reading the source for the [`TelegramClient`](https://github.com/LonamiWebs/Telethon/blob/master/telethon/telegram_client.py) may help a lot!