Happy Coding with Ruby on Rails

The document introduces Ruby and Ruby on Rails. It discusses that Ruby is an object-oriented and interpreted programming language. It highlights some key aspects of Ruby including that everything is an object, Ruby's powerful arrays and built-in regular expressions. It also discusses how Ruby classes are open and the expressiveness of blocks. The document then introduces Ruby on Rails, noting its creators and key principles of convention over configuration, DRY principle, and high productivity. It provides some examples of Rails applications and compares Rails to other web frameworks. In closing, it invites questions and provides references for further reading.