diff --git a/Observing-changes-and-notifications.md b/Observing-changes-and-notifications.md
index 941599a..a4abd16 100644
--- a/Observing-changes-and-notifications.md
+++ b/Observing-changes-and-notifications.md
@@ -134,9 +134,14 @@ let person2 = self.monitor[1, 2]
 
 
 ## Contents
+- [[TL;DR (a.k.a. sample codes)]]
 - [[Architecture]]
-- [[Setting up]]
-- [[Saving and processing transactions]]
-- [[Fetching and querying]]
-- [[Logging and error handling]]
-- [[Observing changes and notifications]]
+- CoreStore Tutorials
+    - [[Setting up]]
+    - [[Migrations]]
+    - [[Saving and processing transactions]]
+    - [[Fetching and querying]]
+    - [[Logging and error handling]]
+    - [[Observing changes and notifications]]
+- [[Installation]]
+- [[Changesets]]
\ No newline at end of file