Rails overview:
guides.rubyonrails.org
rubyonrails.org
weblog.rubyonrails.org
Creator of Rails: David Heinemeier Hansson
david.heinemeierhansson.com
Ruby meetups:
ruby.meetup.com
Code repository:
github.com
Devise gem code repository:
github.com/plataformatec/devise
Gems for ruby and ruby on rails:
rubygems.org
Bootstrap gem code repository:
github.com/twbs/bootstrap-sass
