diff --git a/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb b/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
index cab7e82..eb4912e 100644
--- a/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
+++ b/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:5e808c95d2003c791e04a26d378bc816b2010a59171244a18d73487060d9e029"
+  "signature": "sha256:3313c0dcca1fddb3782f61571ea24bd2c1afea3d9adfb6c1c65ba959d9ce3c7e"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -814,7 +814,7 @@
      "source": [
       "<br>\n",
       "<br>\n",
-      "<a name='consuming_generators'></a>\n"
+      "<a name='consuming_generator'></a>\n"
      ]
     },
     {
@@ -1649,14 +1649,14 @@
       "        print('Hello public world!')\n",
       "    def __private_method(self):\n",
       "        print('Hello private world!')\n",
-      "    def call_private_method_in_class(self):\n",
+      "    def __call_private_method_in_class(self):\n",
       "        self.__private_method()\n",
       "        \n",
       "my_instance = my_class()\n",
       "\n",
       "my_instance.public_method()\n",
       "my_instance._my_class__private_method()\n",
-      "my_instance.call_private_method_in_class()"
+      "my_instance._my_class__call_private_method_in_class()"
      ],
      "language": "python",
      "metadata": {},
@@ -1671,7 +1671,7 @@
        ]
       }
      ],
-     "prompt_number": 28
+     "prompt_number": 1
     },
     {
      "cell_type": "markdown",
diff --git a/not_so_obvious_python_stuff.ipynb b/not_so_obvious_python_stuff.ipynb
index cab7e82..27f785a 100644
--- a/not_so_obvious_python_stuff.ipynb
+++ b/not_so_obvious_python_stuff.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:5e808c95d2003c791e04a26d378bc816b2010a59171244a18d73487060d9e029"
+  "signature": "sha256:a53f896c4edbd7706754674c5f4b46daf5a6b5c00670d0627ddac871550f3717"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -59,7 +59,7 @@
      "source": [
       "# Sections\n",
       "- [The C3 class resolution algorithm for multiple class inheritance](#c3_class_res)\n",
-      "- [Using `+=` on lists creates new objects](#pm_in_lists)\n",
+      "- [Assignment operators and lists - simple-add vs. add-AND operators](#pm_in_lists)\n",
       "- [`True` and `False` in the datetime module](#datetime_module)\n",
       "- [Python reuses objects for small integers - always use \"==\" for equality, \"is\" for identity](#python_small_int)\n",
       "- [Shallow vs. deep copies if list contains other structures and objects](#shallow_vs_deep)\n",
@@ -215,7 +215,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "## Using `+=` on lists creates new objects"
+      "## Assignment operators and lists - simple-add vs. add-AND operators"
      ]
     },
     {
@@ -814,7 +814,7 @@
      "source": [
       "<br>\n",
       "<br>\n",
-      "<a name='consuming_generators'></a>\n"
+      "<a name='consuming_generator'></a>\n"
      ]
     },
     {
@@ -1649,14 +1649,14 @@
       "        print('Hello public world!')\n",
       "    def __private_method(self):\n",
       "        print('Hello private world!')\n",
-      "    def call_private_method_in_class(self):\n",
+      "    def __call_private_method_in_class(self):\n",
       "        self.__private_method()\n",
       "        \n",
       "my_instance = my_class()\n",
       "\n",
       "my_instance.public_method()\n",
       "my_instance._my_class__private_method()\n",
-      "my_instance.call_private_method_in_class()"
+      "my_instance._my_class__call_private_method_in_class()"
      ],
      "language": "python",
      "metadata": {},
@@ -1671,7 +1671,7 @@
        ]
       }
      ],
-     "prompt_number": 28
+     "prompt_number": 1
     },
     {
      "cell_type": "markdown",