diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8538d8e21..076a262b8 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,5 +1,22 @@
 # a temporary version of the contributing doc
 
+## MENU
+
+* Are you opening an issue? Please take a look at [issue](#a-issue) chapter.
+
+* Are you creating a pull request? Please take a look at [pull request](#b-pull-request) chapter.
+
+ * [pull request](#b-pull-request)
+
+  * [a. common conventions](#a-common-conventions)
+
+  * [b. Updating an existing library](#b-updating-an-existing-library)
+
+  * [c. adding a new library](#c-adding-a-new-library)
+
+  * [d. pre-flight checks](#d-pre-flight-checks)
+
+  * [e. P.S.](#e-ps)
 
 ## A. issue