Try Ruby: Ruby Tutorial

Try Ruby: Ruby Tutorial.
Got 15 minutes? Give Ruby a shot right now!
Enter here
https://goo.gl/hIqIpt

Ruby is a programming language from Japan (available at ruby-lang.org) which is revolutionizing the web. The beauty of Ruby is found in its balance between simplicity and power.
Try out Ruby code in the prompt on the right. In addition to Ruby's built-in methods, the following commands are available:
help → Starts the 15 minute interactive tutorial. Trust me, it's very basic!
clear → Clears the screen. Useful if your browser starts slowing down. Your command history will be remembered.
next → Allows you to skip to the next section of a lesson.
back → Allows you to return to the previous section of a lesson.  Enter here
https://goo.gl/hIqIpt