What skills are needed to create a website with a shopping trolley for customers purchases ?

Answer 1

I would recommend checking out oscommerce at http://www.oscommerce.com/ it's a free shopping cart system. If worse comes to worse, you can use the basic template or purchase a template from http://www.templatemonster.com

Answer 2

I would say php and mySQL. If you don't already know them, go with a pre-packaged solution.

Answer 3

You know, like nunchuck skills, bowhunting skills, computer hacking skills. ...