diff --git a/README.md b/README.md
index 50d17bd..f8cd8dd 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,25 @@
-# LUI
+LUI
+------
 Linux User Info - Simple tool to speed up linux system administration.
 
-# How to install?
-cd /tmp/
-git clone https://github.com/51x/LUI
-cd LUI
-mv lui_debian.sh /sbin/lu
-lu
+How to install?
+------
+
+      cd /tmp/
+      git clone https://github.com/51x/LUI
+      cd LUI
+      mv lui_debian.sh /sbin/lu
+      lu
+
+How to use?
+------
+    lui
+        -h This help message.
+        -i User information, use as "-i user".
+        -x eXtended information.
+        -a List all users.
+        -l List all users with locked password.
+        -u List all users with unlocked password.
+        -n List users with nologin shell.
+
+        You can use multiple arguments too, eg. "./lui_deb.sh -l -u"