diff --git a/README.md b/README.md
index 647f057..699ac03 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,9 @@ git clone --recursive https://github.com/mavlink/qgroundcontrol.git
 ```
 Each time you pull new source to your repository you should run `git submodule update` to get the latest submodules as well. Since QGroundControl uses submodules, using the zip file for source download will not work. You must use git.
 
+### User Manual
+https://donlakeflyer.gitbooks.io/qgroundcontrol-user-guide/content/
+
 ### Supported Builds
 
 #### Native Builds