diff --git a/docs/_quarto.yml b/docs/_quarto.yml
index 0500301..6c6bd00 100644
--- a/docs/_quarto.yml
+++ b/docs/_quarto.yml
@@ -77,6 +77,11 @@ book:
           text: "Google Colab Notebooks"
         - notes/dev-tools/google-colab/pip.ipynb
 
+
+    - "-----------------"
+    - part: "Part I: Python Programming"
+    - "-----------------"
+
     - part: "Language Basics"
       #href: notes/python-lang/overview.ipynb
       chapters:
@@ -137,6 +142,11 @@ book:
         - href: notes/data-processing/sorting.qmd
           text: "List Sorting"
 
+
+    - "-----------------"
+    - part: "Part II: Python Applications"
+    - "-----------------"
+
     - part: "Data Visualization"
       chapters:
         - href: notes/dataviz/overview.qmd