diff --git a/ShoppingCart/doc/progress.txt b/ShoppingCart/doc/progress.txt
new file mode 100644
index 000000000..28c16d923
--- /dev/null
+++ b/ShoppingCart/doc/progress.txt
@@ -0,0 +1,4 @@
+# Progress
+
+# 20231126
+- https://dev.to/webtutsplus/let-s-develop-an-e-commerce-application-from-scratch-using-java-1gap
\ No newline at end of file