Make alternative clearer via own code blocks

README.md

@@ -84,8 +84,12 @@ network = pylast.LastFMNetwork(
     username=username,
     password_hash=password_hash,
 )
+```
 
-# You can also authenticate with a session key
+Alternatively, instead of creating `network` with a username and password,
+you can authenticate with a session key:
+
+```python
 SESSION_KEY_FILE = os.path.join(os.path.expanduser("~"), ".session_key")
 network = pylast.LastFMNetwork(API_KEY, API_SECRET)
 if not os.path.exists(SESSION_KEY_FILE):
@@ -110,7 +114,11 @@ else:
     session_key = open(SESSION_KEY_FILE).read()
 
 network.session_key = session_key
+```
 
+And away we go:
+
+```python
 # Now you can use that object everywhere
 track = network.get_track("Iron Maiden", "The Nomad")
 track.love()
@@ -120,6 +128,7 @@ track.add_tags(("awesome", "favorite"))
 # to get more help about anything and see examples of how it works
 ```
 
+
 More examples in
 <a href="https://github.com/hugovk/lastfm-tools">hugovk/lastfm-tools</a> and
 [tests/](https://github.com/pylast/pylast/tree/main/tests).