diff --git a/frontend/README.md b/frontend/README.md
index 0fb1d0c..fe94e91 100644
--- a/frontend/README.md
+++ b/frontend/README.md
@@ -2,6 +2,7 @@
 
 ## Tips
 * use Jetbrains Webstorm IDE
+* don't forget your browser's console (F12)
 
 ## Prerequisites
 * install [nodejs](https://nodejs.org/en/)