Merge pull request #617 from bhchance/patch-2

Update learning.rst

Author: kennethreitz

docs/intro/learning.rst

@@ -150,6 +150,15 @@ This course also features a built-in interpreter for receiving instant feedback
 
 Advanced
 --------
+Effective Python
+~~~~~~~~~~~~~~~~
+
+This book contains 59 specific ways to improve writing Pythonic code. At 227 
+pages, it is a very brief overview of some of the most commons adapations 
+programmers need to make to become efficient intermediate level Python 
+programmers.
+
+    `Effective Python <http://www.effectivepython.com/>`_
 
 Pro Python
 ~~~~~~~~~~