1. Download and install bluestacks.exe from http://www.bluestacks.com/
2. Run the blue stack and click on the whatsapp icon to get it installed
Or
If you have already downloaded whatsapp.apk separately from http://www.whatsapp.com/ just double click, it will automatically get installed with the help of blue stack.
3. Now that you’re ready with whatsapp running through bluestacks do the verification.
3.1 Select the country where you belong, the country code is auto selected.
3.2 Enter your mobile number (Keep your cell phone switched on).
3.3 You will get a SMS (from VM-SMSSMS) with 6 digit security code which you have to enter in the field.
Or
If SMS verification fails due to some reason the call verification will be done where you have to receive the call (from +12404286628) and note down 6 digit number to enter in the field.
4. Set up your profile by adding your photos, and other personal details.
5. Add your friends contact information just like adding contacts in your mobile phone.
6. Now is the time to whatsapp your friends!
[Notes:
# Executable file extension of windowsOS is .EXE for AndroidOS it is .APK
# Bluestacks is an emulator, what is emulator?
Emulator is the one which behaves exactly like something else, and abides by all of the rules of the system being emulated. It is effectively a complete replication of another system, right down to being binary compatible with the emulated system's inputs and outputs, but operating in a different environment to the environment of the original emulated system.
# If you are using any other operating system for your PC just download the bluestacks for that particular OS and all the steps remains the same.]