Develop Real Time Ordering Online

Hello all,

First post. I’ve got very limited web dev skills and am wrapping up Lloyd’s Building Your Own Web Site The Right Way. What programming languages and skills would would I need to learn to in order to allow customers to order online in real time for a pizza website. The simpler, the better. Can this be done with just xhtml and css? I’m thinking setting up the ordering webpage as a form but not sure how to set up real time.