Learn all of squash fundamentals, free e-book: http://goo.gl/d83Ak5
Related Article: http://adf.ly/ThmkD
In this video Gallo from http://www.squash-tips.com explains two simple methods to learn the proper grip in squash and how to hold the racket.
To learn the corrcect grip start by forming a V with your index and thumb, hold the racket with just this 2 fingers and then close the hand. The grip is as simple as this.
There must be a space of one finger between the index and the middle finger.
Practice will make your grip better and will also make you understand how and when to shorten it or enlong it. I suggest you chekout my article about this: http://squashtip.blogspot.com/2013/01…
A video video every week @ http://squashtip.blogspot.com