How to install Whatsapp Messenger in PC

>Download Bluestack application
>Click here to download :  File size = 128 MB
>Install the downloaded file
>Once bluestack has been installed open the application homepage.
>And click messaging, It will search for apps, and list you several messaging apps.
>Select whatsapp messenger from the list then click whatsapp icon to install.
>Accept terms and conditions to proceed.
>Now open the whatsapp messenger app in bluestack and enter your mobile number followed by your country code. 
>You will receive a verification code in your mobile shortly from whatsapp.
>Enter the received 6 digit code in two parts on the field prompted.

Note : Whatsapp users with smartphone have their contacts synchronized automatically from mobile contacts. Hence you use it on PC, contacts should be added manually.