^^^^^^
Ugh. Java. Don't ever use Java if you can avoid it.
Came in here looking for hunting info and I found this...ha.
It really depends on what you want to do. You can code CGI applications in C if you're feeling sassy, but I don't recommend it. If you want to code web applications, Django is a good way to go since Python is really easy to learn. Using WEBrick in Common Lisp would make you an ultra-stud but Lisp isn't really a language for the masses. You could try Ruby on Rails but then you might as well hang out in coffee shops all day with your Mac and complain about how the bands you used to like got popular.
Knowing JavaScript is always good. Since web programming is so accessible now you should be able to find some good tutorials using Google-fu.