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@@ -43,6 +43,8 @@
 <a href="http://docker.com">Docker</a> for portable runtime environments.</p>
 <p>CWL is designed to express workflows for data-intensive science, such as
 Bioinformatics, Medical Imaging, Chemistry, Physics, and Astronomy.</p>
+<h2 id="CWL_User_Guide">CWL User Guide</h1>
+<p><a href="http://www.commonwl.org/draft-3/UserGuide.html">User guide for the current stable specification (draft-3)</a>, providing a gentle introduction to writing CWL command line tools and workflows.</p>
 <h2 id="CWL_Specification">CWL Specification</h1><p>The current stable specification is <a href="http://www.commonwl.org/draft-3/">draft 3</a>:</p>
 <p><a href="http://www.commonwl.org/draft-3/">http://www.commonwl.org/draft-3/</a></p>
 <p>Older drafts: <a href="https://github.com/common-workflow-language/common-workflow-language/tree/master/draft-1">draft-1</a>, <a href="http://www.commonwl.org/draft-2/">draft-2</a></p>
@@ -137,4 +139,4 @@ <h2 id="Individual_Contributors">Individual Contributors</h1><p>(Alphabetical)</
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