Product Customization Module Development

[ankitnaredi]

Hi,
I m new to Prestashop.
I am creating a module which will display a page when a customer will click on "add to card" button, the page will contain the options to customize the product like (change background color, add picture, add shape etc)..
I need help in developing this module.
Please tell me which hook will be registered for showing page before adding product to the cart and how will I show the button to customize the product and so on

thanks in advance.
Plz help asap.