cheat sheets.

Learn this:
  rails
  rvm
  bundle
  gem
  yml
  rake
  cucumber
  gherkin
  webrat
  capybara
  rspec
  haml
  sass
  css selectors
  xpath selectors

Great study resources:
  Ruby on Rails for Zombies
  Ruby on Rails 3 Tutorial and resources it mentions:
    After finishing Ruby on Rails 3 Tutorial:
      The Well-Grounded Rubyist
      The Ruby Way
      The Rails 3 Way
    Intermediate-to-advanced resources:
      Railscasts
      PeepCode, Pragmatic.tv, EnvyCasts
      Rails Guides
      Rails blogs -- there are a "ton" of good ones