Ruby is a fully object oriented, high-level, dynamic programming language designed for simplicity and readibility

• Hello World
• Types
• Variables
• Numbers
• Strings
• If/Else
• When/Case
• While/For
• Block
• Functions
• Array
• Hash
• Variable Arguments
• Variable Scope
• String Functions
• Math
• Random Numbers
• Time
• File IO
• Require
• Object Oriented Programming
• Module
• Environment Variables