diff --git a/002-basic-control-structures/Python Course - 002a - And so we begin.ipynb b/002-basic-control-structures/Python Course - 002a - And so we begin.ipynb
index fe6f91c..a0310d1 100644
--- a/002-basic-control-structures/Python Course - 002a - And so we begin.ipynb	
+++ b/002-basic-control-structures/Python Course - 002a - And so we begin.ipynb	
@@ -74,24 +74,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {
     "slideshow": {
      "slide_type": "fragment"
     }
    },
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "700"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "7*100"
    ]
@@ -111,27 +100,9 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "image/png": "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\n",
-      "text/latex": [
-       "$\\displaystyle \\frac{x^{6}}{6}$"
-      ],
-      "text/plain": [
-       " 6\n",
-       "x \n",
-       "──\n",
-       "6 "
-      ]
-     },
-     "execution_count": 2,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "from sympy import * \n",
     "init_printing()\n",
@@ -275,8 +246,8 @@
     }
    },
    "source": [
-    "1. Open a new window/tab in Firefox and<br/>go to https://bit.ly/py-jupyter\n",
-    "2. Enter your email address\n",
+    "1. Open a new window/tab in Firefox and<br/>go to http://bit.ly/fat-qub-py-2021-start \n",
+    "2. Enter your login\n",
     "3. Click the original link again\n",
     "3. Once it has finished loading you should see a list of files\n",
     "4. Pick the **002-basic-control-structures** subdirectory\n",