diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..5c93f45
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,13 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/README b/README
index 9283cae..5c069e7 100644
--- a/README
+++ b/README
@@ -1,13 +1,36 @@
 pwc
+===
 
-Password Copy
+Password Copy.
 
-Generate password and copy it to clipboard via xclip. Generated password will not printed in termainal.
+Generate password and copy it to clipboard via xclip. Generated password will not printed in termainal. Default password lenght is 12 characters.
 
-Default password lenght is 12 characters.
+Installation
+============
+
+Just download pwc.py and place it into $PATH. ~/.local/bin/pwc is good choice. Don't forget give execution rights to file:
+
+$ chmod +x pwc.py
+
+pwc requires xclip package. Install xclip for your operating system.
+
+Arch Linux:
+
+$ sudo pacman -S xclip
+
+Ubuntu/Debian:
+
+$ sudo apt install xclip
+
+Usage
+=====
 
 Usage: pwc [-h | --help] [-s | --special] [-p | --print] [<lenght>]
 
     -s, --special    use punctuation characters in password.
     -p, --print      print password to STDOUT instead of copy to clipboard.
     -h, --help       print this help message and exit.
+
+Example:
+
+$ pwc -s 32
diff --git a/pwc.py b/pwc.py
index 2d5ffde..45200cf 100755
--- a/pwc.py
+++ b/pwc.py
@@ -1,5 +1,11 @@
 #!/usr/bin/env python3
 
+# This program is free software. It comes without any warranty, to
+#   the extent permitted by applicable law. You can redistribute it
+#   and/or modify it under the terms of the Do What The Fuck You Want
+#   To Public License, Version 2, as published by Sam Hocevar. See
+#   http://www.wtfpl.net/ for more details.
+
 import sys
 import getopt
 import subprocess