Add common steps

Examples.md

@@ -1,3 +1,36 @@
+## Common steps
+
+All examples listed here 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()
+```
+
 ## Working with messages
 * [Forwarding messages](Forwarding-messages)
 * [Searching messages](Searching-messages)