diff --git a/docker/training/lessons/1-docker-getting-started.md b/docker/training/lessons/1-docker-getting-started.md
index 95f4b40..62be17f 100644
--- a/docker/training/lessons/1-docker-getting-started.md
+++ b/docker/training/lessons/1-docker-getting-started.md
@@ -1,3 +1,11 @@
+# Cleanup your isen
+If necessary, cleanup your `isen` from previous `ansible` TP results:
+
+```bash
+apt-get purge -y nginx
+docker stop demo
+```
+
 # Start the TP
 
 ```bash