First application in Ruby on Rails Uploading files and pictures into Rails application

Ok, I start learning Ruby on Rails and for that I followed some tutorials. Today, after 3 days of searching for tutorials, after learning something about RoR and MVC I was able to write my first application, and is not a "Hello World".
So,  I wont put code in this article because I think its useless, I think that my app is very basic. Ill start posting ruby code when Ill develop a more complex application!
But, until then, Ill make a short video tutorial about how to install Ruby on Rails on Ubuntu 12.10.