In my experience, there are two options when working with web dev: get a job or go freelance.
Getting a job is probably easier if you have something to show, a small portfolio if you will. So you'd need to have something to show, and what I did was creating sites for my family's and friends' businesses, for free (3 websites, to be exact).
Going freelance is harder, not as safe as a regular job, but can pay better. I say can because it is not necessarily true, it can take months before you can really rely on it. You'd need a good portfolio as well, to show potential clients, and all the deadlines are usually defined by contract.
Still, as someone said already, PHP.
With PHP, you can go autonomous or get a job. It is still the most asked language on interviews for this kind of job. A lot of people make jokes about it, but it is still a strong standard.
Secondly, it is good if you can handle yourself with at least one CMS. Be it Joomla, Drupal, Wordpress, or any. Familiarize yourself with the CMSs and a free framework such as Joomla's Gantry and T3 or Wordpress' Sparky. It will help you get nice websites to deliverable states in much less time; especially if you decide to go freelance. That's how I do it. I use Joomla mostly.