diff --git a/README.md b/README.md
index e918ce9..659a771 100644
--- a/README.md
+++ b/README.md
@@ -73,3 +73,24 @@ apply as with [Name](#tag--name).
 ## Blog
   * https://aws.amazon.com/blogs/security/simplify-dns-management-in-a-multiaccount-environment-with-route-53-resolver/
 
+
+# Repository Setup Details
+
+* One time
+
+```script
+git submodule add https://github.com/aws-samples/aws-lambda-ddns-function aws-lambda-ddns-function
+git commit -m'add submodule' aws-lambda-ddns-function
+```
+
+* After first clone
+
+```script
+git submodule update --init
+```
+
+* Pull new stuff from submoduule
+
+```script
+git submodule foreach git pull origin master
+```