Ruby Getting Started

Simple Note

Go to http://rubyinstaller.org/downloads/ and
choose latest stable version (1.9.3 for now)
or
check the recommanded version in download page of RoR.
http://rubyonrails.org/download/
I prefer the stable one.

Download it

run installer

follow tutorial to run first gem
http://guides.rubygems.org/make-your-own-gem/#first-gem

testing process and result
https://github.com/benbai123/RubyOnRails/blob/master/Practice/Ruby_Getting_Started/test.png

Full test project at github
https://github.com/benbai123/RubyOnRails/tree/master/Practice/Ruby_Getting_Started