diff --git a/README.md b/README.md
index 785ce25..258d06a 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,32 @@
 # ipython-data-notebooks
 Continually updated IPython Data Science Notebooks geared towards processing big data (AWS, Spark, Hadoop, Linux command line, Python, NumPy, pandas, matplotlib, SciPy, scikit-learn, Kaggle).
 
+## kaggle
+
+IPython Notebooks used in [kaggle](https://www.kaggle.com/) competitions.
+
+* [titanic](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/kaggle/titanic.ipynb)
+
+## aws
+
+IPython Notebooks demonstrating Amazon Web Services functionality.
+
+* [aws commands index](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb)
+* [s3cmd](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3cmd)
+* [s3-parallel-put](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3-parallel-put)
+* [s3distcp](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3distcp)
+* [mrjob](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#mrjob)
+* [redshift](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#redshift)
+* [kinesis](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#kinesis)
+* [lambda](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#lambda)
+
+## spark
+
+IPython Notebooks demonstrating spark and HDFS functionality.
+
+* [spark](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/spark/spark.ipynb)
+* [hdfs](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/spark/hdfs.ipynb)
+
 ## python-core
 
 IPython Notebooks demonstrating core Python functionality geared towards data analysis.
@@ -21,26 +47,6 @@ IPython Notebooks demonstrating pandas functionality.
 * [pandas io](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/pandas/pandas_io.ipynb)
 * [pandas cleaning](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/pandas/pandas_clean.ipynb)
 
-## aws
-
-IPython Notebooks demonstrating Amazon Web Services functionality.
-
-* [aws commands index](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb)
-* [s3cmd](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3cmd)
-* [s3-parallel-put](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3-parallel-put)
-* [s3distcp](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#s3distcp)
-* [mrjob](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#mrjob)
-* [redshift](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#redshift)
-* [kinesis](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#kinesis)
-* [lambda](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/aws/aws.ipynb#lambda)
-
-## spark
-
-IPython Notebooks demonstrating spark and HDFS functionality.
-
-* [hdfs](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/spark/hdfs.ipynb)
-* [spark](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/spark/spark.ipynb)
-
 ## commands
 
 IPython Notebooks demonstrating various command lines for Linux, Git, etc.
@@ -52,12 +58,6 @@ IPython Notebooks demonstrating various command lines for Linux, Git, etc.
 * [ruby](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/commands/misc.ipynb#ruby)
 * [jekyll](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/commands/misc.ipynb#jekyll)
 
-## kaggle
-
-IPython Notebooks used in [kaggle](https://www.kaggle.com/) competitions.
-
-* [titanic](http://nbviewer.ipython.org/github/donnemartin/ipython-data-notebooks/blob/master/kaggle/titanic.ipynb)
-
 ## matplotlib
 
 [Coming Soon] IPython Notebooks demonstrating matplotlib functionality.