diff --git a/_Sidebar.md b/_Sidebar.md
index 4ea9dc6..dcee14d 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,17 +1,17 @@
 [[Home]] 
 
 **Guide**
-* English: [Getting Started]
+* English: [[Getting Started]]
 
 **UI**
 * [[App Layout]]
-* [Keyboard Shortcuts]()
-* [Keymaps]()
+* [[Keyboard Shortcuts]]
+* [[Keymaps]]
 
 **Theme**
-* [Color theme]()
-* [Codeblock theme]()
-* [Editor theme]()
+* [[Color theme]]
+* [[Codeblock theme]]
+* [[Editor theme]]
 
 **Syncing & Collaboration**
 * [[Cloud Syncing]]
@@ -19,4 +19,9 @@
 
 
 **Integrations**
-* [Evernote]
+* [Evernote]]
+
+**Communication with us
+* [Slack group](https://github.com/BoostIO/Boostnote#slack-group)
+* [Twitter](https://twitter.com/boostnoteapp)
+* [Facebook group](https://www.facebook.com/groups/boostnote/)
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