diff --git a/README.md b/README.md
index 622cee1..78f3258 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,24 @@
 
 checkpw is a program that checks the validity of a users password on a Linux/PAM-based system.
 
+## The idea behind:
+
+Exactly a program like this...
+
+# Installation:
+
+```
+git clone https://git.xw3.org/hanez/checkpw.git
+cd checkpw
+make
+sudo make install
+```
+
+# Usage:
+# checkpw - 1.0
+
+checkpw is a program that checks the validity of a users password on a Linux/PAM-based system.
+
 ## They idea?
 
 Exactly a program like this...
@@ -34,3 +52,20 @@ Returns 0 on success, 1 otherwise.
 echo $?
 ```
 
+```
+./checkpw [-u <username>] [-p <password>] [-i] [-v] [-h]
+
+Options:
+  -u <username>  Specify username.
+  -p <password>  Specify password.
+  -i             Enable interactive mode to prompt for missing username/password.
+  -v             Enable verbose mode.
+  -h             Show this help
+```
+
+Returns 0 on success, 1 otherwise.
+
+```
+echo $?
+```
+