How To Wrap Badminton Racket Grip

I bought two badminton rackets recently on Ebay and need to wrap the racket grip.  I saw someone did it longer time ago, but didn't remember actually how.

What do I do?  Google it and found this site with video tutorial.

While searching for above site, I encounter this page that show to how grip the racket, forehand and backhand.

Source:
http://www.badminton.tv
http://www.badminton-information.com