I'd always worked in retail, pubs and call centres so 2 years ago decided i'd become a web developer. Mate of mine builds websites for hilton and it seemed pretty interesting, easy enough to pick up. I never did any computing at school but I went back to uni for 1 year to do a postgrad in IT, the course was really easy and now im just finishing my first year on a 20k starting salary. Web development's pretty easy, theres a lot to learn but no one knows everything and you can basically google how to do most times and someone will tell you, to be honest you could learn how to build websites in your spare time pretty quickly using websites like teamtreehouse.com. Get a portfolio together building websites for friends and start applying for jobs.