diff --git a/notes.md b/notes.md
new file mode 100644
index 0000000..11410b1
--- /dev/null
+++ b/notes.md
@@ -0,0 +1,13 @@
+# Reading the code in Tic Tac Toe
+
+Which class is responsible for each of the following behaviors?
+For each, explain how the behavior is accomplished.
+
+## Checking to see whether the game is over
+
+## Determining which actions are available at a particular state
+
+## Showing the board
+
+## Choosing which action to play on a turn
+