change summary

Author: JeffKatzy

index.ipynb

@@ -68,7 +68,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "> Remember to press shift+enter to run each gray block of code.  Otherwise, the variables will not be defined."
+    "> Remember to press shift+enter to run each gray block of code (including the one above).  Otherwise, the variables will not be defined."
    ]
   },
   {
@@ -104,7 +104,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "> Make sure you run the code in the cell above by pressing shift + enter."
+    "> Run the code in the cell above by pressing shift + enter."
    ]
   },
   {
@@ -401,7 +401,7 @@
     "collapsed": true
    },
    "source": [
-    "In this section we saw how to get our data from the outside world and into Python.  The purpose isn't to understand all of this code right now, but rather to see how easily we can start working with outside data.  As we become better at Python, the usefulness of taking data and operating on it in code rather than a spreadsheet will become more apparent.  But that doesn't mean we can't get step outside of the Python sandbox now.  It's not too difficult to take some data we may already have, and begin to use it with Python.  In the next section, we'll use a lab to get data from excel and work with lists."
+    "In this lesson, we had some practice with working with lists in Python.  We saw how to add and remove elements from a list, as well as select specific elements.  Finally, we saw how to use a different data structure to calculate the number unique elements in the list."
    ]
   }
  ],