diff --git a/docs/Makefile b/docs/Makefile
index 08a88da..0edad84 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -13,7 +13,7 @@
 GENERATED_DOCS = build_glossary.md
 
 serve: setup
-	gitbook serve
+	gitbook serve --port 4040
 
 build: setup
 	gitbook build
diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
index fa93030..43302b6 100644
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -37,8 +37,10 @@
     * [Workflow: Mock/Single Scenario](xos/dev/workflow_mock_single.md)
     * [Workflow: Local Scenario](xos/dev/workflow_local.md)
     * [Workflow: CiaB Scenario](xos/dev/workflow_pod.md)
-    * [Example Service](xos/example_service.md)
     * [TOSCA Development](platform-install/bootstrap_models_in_xos.md)
+    * [Tutorials](xos/tutorials/tutorials.md)
+        * [Example Service](xos/tutorials/example_service.md)
+        * [Synchronizer in the local scenario](xos/tutorials/local_synchronizer_dev_loop.md)
     * [GUI Development](xos-gui/developer/README.md)
         * [Quickstart](xos-gui/developer/quickstart.md)
         * [Service Graph](xos-gui/developer/service_graph.md)