diff --git a/subjects/head-and-tail/README.md b/subjects/head-and-tail/README.md
index c5a9d5338..48397d1a3 100644
--- a/subjects/head-and-tail/README.md
+++ b/subjects/head-and-tail/README.md
@@ -47,4 +47,7 @@ $tail -1 file
 $
 ```
 
-May you will need to use `pipe (|)` and "&&".
+May you will need to use `pipe (|)` and `&&`.
+
+> You have to use Man or Google to know more about commands flags, in order to solve this exercice!
+> Google and Man will be your friends!