Hi ive been learning maya for about a month and feal i understand the basics of modelling and have been able to model the objects i have tried quite well. Now im trying to learn texturing. I have modelled an after shave bottle with seperate models for the outsurface, inner surface and fluid but i havnt got a clue how to shade them. I have found a great tutorial however i dont understand how they made the glass shader. From the image i think they used the hypershade to create materials and linked them - but this is where i get confused why do you link materials, how do you do it etc.

Basically is there a tutorial that goes threw in detailed the steps involved in making a glass shader

TY in advance
Mark