diff --git a/README.md b/README.md
index df9306e..2fff564 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,30 @@
 # ComAdd
 This script prevent you from distractions
+
+## How this work?
+The scripts will kill the programs in blocklist if they exist, add websites in blocklist to hostfile and track the usuage time of them.
+<br>Between the session, there will be a small break for you.
+
+## Requirement
+- Python 3.7
+
 ## Installation
 ```bash
 git clone https://github.com/raspiduino/comadd.git
 cd comadd
-pip install pywin32
+pip install pywin32 matplotlib numpy==1.19.3
+sudo apt-get install -y xdotool # If you are on Linux
 comadd.py
 ```
-Or you can goto <a href="https://github.com/raspiduino/comadd/releases">Release</a>
-<br>Don't use the extension yet!
-## Todo
-- Add time tracker
-- Fix extension
+</br>Note: You need to change the setting the first time you use this script.
+### Install the extension
+- Goto chrome://extensions/ and click Developer mode
+- Click on Load unpacked and choose the extension folder in the repo
+- Done!
+
+## Warnings
+- You need to run this script as <b>Administrator</b>/<b>root</b>
+- Some time the Windows Defender may warn this script as <b><i>HostsFileHijack</i></b>. This is wrong positive because this script need to edit the hostfile for blocking websites in block list. So allow the script to do that. <br>Note: if you see another program flag at this, be careful that it maybe the true virus. So please backup your hostfile.
+
 ## License
-Under <a href="https://github.com/raspiduino/comadd/blob/master/LICENSE">GPL-v3</a>
\ No newline at end of file
+Under <a href="https://github.com/raspiduino/comadd/blob/master/LICENSE">GPL-v3</a>