diff --git a/docs/ideas-ToDo.md b/docs/ideas-ToDo.md
index 86a3fdf..f3ef8cd 100644
--- a/docs/ideas-ToDo.md
+++ b/docs/ideas-ToDo.md
@@ -1,5 +1,7 @@
 # Ideas ToDo
 
+see also https://github.com/www-learn-study/ToDoNotes/blob/main/README.md
+
 ## Must
 
 1. #Hack Codelab #1 (with Bazel)