All languages present on codeacademy are worth learning. But: if you have something in mind you want to build, pick a language and environment that fits it. If

All languages present on codeacademy are worth learning. But: if you have something in mind you want to build, pick a language and environment that fits it. If you want to code on microcontrollers, python and ruby are not a good idea. Want to build a website? python or ruby + javascript are a great idea! Use something that people commonly use to solve such a problem. Your first implementation will be bad in any case, regardless of language. You will laugh at it in a few years. Rebuild it after a whilse. But thats no problem: everyone of us went through this process.