Using WhatsApp from your computer is as easy as 3 steps.
1) Open WhatsApp on your phone and go to Menu > WhatsApp Web.
2) Visit http://web.whatsapp.com with a web browser on your computer.
2) Scan the QR Code on your browser.
1) To view your Logged in computers or to logout from an active WhatsApp Web session, navigate to WhatsApp Web in your phone.
2) To avoid data usage charges on your phone, always connected to Wi-Fi when using WhatsApp Web.