New and need help about Main picture linking to other picture

[firescorpz]

Hi,

I am new to prestashop and need some help.
Ok what I need to do is to link picture to picture.

For example:

I have a subcategories call dresses and in it I have items:
A.1 (picture display on the webpage)
A.2 (picture display on the webpage)
A.3 (picture display on the webpage)

Now item A.1 have 3 colours red, white, black
The display picture on the webpage is red in colour (no white and black display here)

Now if the customer click on the A.1 red, I want it to be link to another page which will show
the A1.red in big picture and the white and black in smaller picture. Customer can then click on
the white or black picture to view bigger image of it.

can anyone help me on this? By they way what do I call this function?
please advise, thank you