What is Ruby?
Is it a scripting language?
Not like C# or anything? What kind of applications can you build with it?
Can it core a apple?
Ruby is an open-source, object-oriented, interpreted programming language. It has its strengths (many) and weaknesses (few) but overall is a beautiful and enjoyable language to use. It's perhaps best known for being the language behind the
Ruby on Rails open-source web framework that vastly decreases the time and headache of creating web applications.
Heroku is a very cool service that allows you to easily deploy a Rails application into the real world (something that until recently was not the easiest thing to do). The only issue I have with Heroku is that while you can get up and running for free. The next step in pricing and capability is a large one. Things can get expensive very fast with them.
Hope this helps.