Here is some info I left out on Ruby on Rails. Ruby on Rails is basically like Microsofts .net, except rails is an extension of the Ruby language. Some say that you should learn Ruby before learning Ruby on Rails, I say do whatever works for you.
If you want to develop Ruby on Rail Apps you can do it in windows but it is a pain and really, really annoying. I would suggest installing Ubuntu on a seperate hard drive and downloading the newest stable version of RoR from www.rubyonrails.org. They have step by step instructions for installing RoR. If you decide to use Windows, despite my warning you will have to use a much older version of rails.
Simple do and Don't rules for Ubuntu and Ruby on rails
Do not use apt-get that is not the right way to install RoR.
All you need to do is install the latest RubyGems file then go into the terminal and type gem install rails. Walla, you now have RoR.
Simple tutorial: Building a simple app.
I have copied this small section of text from the official Ruby on Rails Guide on getting started
Note you only have to use the $ sign in the following example if you are using windows. Ignore it if you are using Linux.
"Open a terminal, navigate to a folder where you have rights to create files, …