diff --git a/homework/HW1/HW1-final/P1.py b/homework/HW1/HW1-final/P1.py
new file mode 100644
index 0000000..e69de29
diff --git a/homework/HW2/HW2-final/P1.py b/homework/HW2/HW2-final/P1.py
new file mode 100644
index 0000000..e69de29
diff --git a/homework/HW2/HW2-final/P2.py b/homework/HW2/HW2-final/P2.py
new file mode 100644
index 0000000..e69de29
diff --git a/homework/HW3/HW3-final/P1.py b/homework/HW3/HW3-final/P1.py
new file mode 100644
index 0000000..69defc9
--- /dev/null
+++ b/homework/HW3/HW3-final/P1.py
@@ -0,0 +1 @@
+# some python code
diff --git a/lectures/README.md b/lectures/README.md
new file mode 100644
index 0000000..755f3ce
--- /dev/null
+++ b/lectures/README.md
@@ -0,0 +1 @@
+Example lectures sub-directory
diff --git a/pair_programming/README.md b/pair_programming/README.md
new file mode 100644
index 0000000..e2b37ca
--- /dev/null
+++ b/pair_programming/README.md
@@ -0,0 +1 @@
+Example pair_programming sub-directory