diff --git a/site/_docs/extras.md b/site/_docs/extras.md
index 2af6a305..b8b8bb72 100644
--- a/site/_docs/extras.md
+++ b/site/_docs/extras.md
@@ -9,7 +9,13 @@ may want to install, depending on how you plan to use Jekyll.
 
 ## Math Support
 
-Kramdown comes with optional support for LaTeX to PNG rendering via [MathJax](http://www.mathjax.org/) within math blocks. See the Kramdown documentation on [math blocks](http://kramdown.gettalong.org/syntax.html#math-blocks) and [math support](http://kramdown.gettalong.org/converter/html.html#math-support) for more details.
+Kramdown comes with optional support for LaTeX to PNG rendering via [MathJax](http://www.mathjax.org/) within math blocks. See the Kramdown documentation on [math blocks](http://kramdown.gettalong.org/syntax.html#math-blocks) and [math support](http://kramdown.gettalong.org/converter/html.html#math-support) for more details. MathJax requires you to include JavaScript or CSS to render the LaTeX, e.g.
+
+{% highlight html %}
+<script src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript"></script>
+{% endhighlight %}
+
+For more information about getting started, check out [this excellent blog post](http://gastonsanchez.com/blog/opinion/2014/02/16/Mathjax-with-jekyll.html).
 
 ## Alternative Markdown Processors