diff --git a/.vscode/settings.json b/.vscode/settings.json
index 91ceb037c..b37fe572a 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -17,7 +17,6 @@
   "files.autoSave": "afterDelay",
   "screencastMode.onlyKeyboardShortcuts": true,
   "terminal.integrated.fontSize": 18,
-  "workbench.activityBar.visible": true,
   "workbench.colorTheme": "Visual Studio Dark",
   "workbench.fontAliasing": "antialiased",
   "workbench.statusBar.visible": true
diff --git a/README.md b/README.md
index 39bdeea0c..575a4581e 100644
--- a/README.md
+++ b/README.md
@@ -35,3 +35,4 @@ Check out my other courses on [LinkedIn Learning](https://www.linkedin.com/learn
 [lil-course-url]: https://www.linkedin.com/learning/python-data-analysis-24296803
 [lil-thumbnail-url]: https://media.licdn.com/dms/image/v2/D4D0DAQGSYAIAZElfSA/learning-public-crop_675_1200/learning-public-crop_675_1200/0/1733965184177?e=2147483647&v=beta&t=OXv45ZLLtcgntIsvH0mJG8ztMyetqZ0fUfscSXvDt50
 
+#document to prove I know something
diff --git a/ch00-introduction/00_04_codespace.ipynb b/ch00-introduction/00_04_codespace.ipynb
index cb0c19d79..a414cca24 100644
--- a/ch00-introduction/00_04_codespace.ipynb
+++ b/ch00-introduction/00_04_codespace.ipynb
@@ -67,3 +67,4 @@
  "nbformat": 4,
  "nbformat_minor": 4
 }
+
diff --git a/ch01-datastructures/01_01_loops.ipynb b/ch01-datastructures/01_01_loops.ipynb
index 221f58679..e93685451 100644
--- a/ch01-datastructures/01_01_loops.ipynb
+++ b/ch01-datastructures/01_01_loops.ipynb
@@ -32,6 +32,10 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "git add.#Showcases how range works\n",
+    "# for i in iterable (do something with i)\n",
+    "# range is set up by range([start,] stop [,step])\n",
+    "# range excludes the end value; range of 0-10 counts from 0-9 for n is 10 counts\n",
     "for i in range(0, 10):\n",
     "    print(i)"
    ]