What's your goal? If it's to get a job, check with companies in your area and learn the stack they are using...unless you want to move.
If it's for the development of your own personal projects, pick whatever you like. If you like developing website, check out each languages' frameworks and see what moves you.
Personally, I code in PHP & Python. Python can say a lot with a little and let's you command line script, with pretty good libraries. PHP is very readable and there is SOOO much code out there, you probably will write very little from scratch. Those are probably the only things relevant to someone just testing the waters.
I've heard RoR is pretty :P
Good Luck!