diff --git a/README.md b/README.md
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@@ -72,6 +72,7 @@ Start here.
  * A Course in Machine Learning / Hal Daumé III UMD [Online Book](http://ciml.info/)
  * Programming Collective Intelligence [O'Reilly / Book](http://shop.oreilly.com/product/9780596529321.do)
  * Statistics [The Elements of Statistical Learning](http://www-stat.stanford.edu/~tibs/ElemStatLearn/)
+ * Machine Learning / CaltechX [Caltech / Edx](https://courses.edx.org/courses/CaltechX/CS1156x/Fall2013/)
 
 * **Probabilistic Graphical Models**
  * Probabilistic Programming and Bayesian Methods for Hackers [Github / Tutorials](https://github.com/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers)