diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..eb00f07
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "Dn-help"]
+	path = Dn-help
+	url = https://github.com/Dn-Programming-Core-Management/Dn-help.git
diff --git a/Dn-help b/Dn-help
new file mode 160000
index 0000000..bed73f8
--- /dev/null
+++ b/Dn-help
@@ -0,0 +1 @@
+Subproject commit bed73f83d2cd3b3802c7092fd4c05380c28bd09c
diff --git a/index.html b/index.html
index ac8794e..608e373 100644
--- a/index.html
+++ b/index.html
@@ -7,7 +7,8 @@
     <body>
         <div>
             Welcome to the Dn Programming Core Management site! <br>
-            todo: make the rest of the site
+            todo: make the rest of the site<br>
+            <a href="Dn-help/hlp/main_index.htm">Go to manual</a>
         </div>
     </body>
 </html>
\ No newline at end of file
