diff --git a/README.md b/README.md
index 5cd2da0..73ac95d 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,7 @@
-# CodeRefinery instructor training lesson
+# CodeRefinery train-the-trainer course material
+
+In 2024 we combined two older versions of the material
+into a new course version. But you can still find the previous
+two versions as we kept them on branches:
+- https://coderefinery.github.io/train-the-trainer/branch/instructor-training/
+- https://coderefinery.github.io/train-the-trainer/branch/community-teaching/