Maybe this chart that tracks the popularity of each language can help you make some decisions: http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html
Popularity isn't everything, don't take the numbers at face value. They're used to inform.
The real question is why do you want to code? Do you have a goal? The language doesn't matter without a goal or objective. If you really have to choose something for some arbitrary reason, you've made a decent choice with C. Otherwise if you want to learn how to theoretically program (ie what it takes to be a good programmer) you can just study theory and techniques.








