by Geoffrey Grosenbach This course introduces Rails 3, the result of two years of low-level improvements, API refinements, and performance optimizations. If you are just learning Rails or if you have limited knowledge and want to learn more, this is the video for you!
![Introduction to Ruby on Rails 3](https://cdn-ak-scissors.b.st-hatena.com/image/square/a1b51738f1c529255b9b3976810b1b844d478284/height=288;version=1;width=512/https%3A%2F%2Fpluralsight.imgix.net%2Fcourse-images%2Fintroduction-to-ruby-on-rails-3-v1.jpg)