diff --git a/notebooks/python-overview.ipynb b/notebooks/python-overview.ipynb
index fefd20e..a746848 100644
--- a/notebooks/python-overview.ipynb
+++ b/notebooks/python-overview.ipynb
@@ -6,7 +6,7 @@
    "source": [
     "# Python\n",
     "\n",
-    "* python  (is a scripting language, not unlike **bash**, but check out **xonsh**)\n",
+    "* python  (is a scripting language, not unlike **bash**, but check out **xonsh** on http://xon.sh/ if you like to try a real python login terminal shell)\n",
     "\n",
     "```\n",
     "   % cat hello.py\n",
@@ -19,8 +19,8 @@
     "   Hello World\n",
     "```\n",
     "\n",
-    "* ipython\n",
-    "* jupyter notebook\n",
+    "* ipython : for interactive work\n",
+    "* jupyter notebook : for managing and presenting your workflow\n",
     "\n",
     "## Concepts covered today\n",
     "\n",
@@ -32,6 +32,15 @@
     "* class\n",
     "* module\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {