You would need to learn HTML, CSS, Javascript, and jQuery (you seem to be well on your way here). On the backend, you only need to learn one of the following t

You would need to learn HTML, CSS, Javascript, and jQuery (you seem to be well on your way here). On the backend, you only need to learn one of the following three: Ruby, Python, or PHP. Again, it's a matter of taste. Personally, I come from the startup world, and we all dislike PHP, so you'll find few Bay Area / SF startups using that anymore. That being said, if you know a friend who knows Ruby (and Ruby on Rails), Python (and Django), or PHP (and a PHP CMS or CakePHP), then that would be best.