I create this page to eliminate repeated web search on relevant information.

First, I have found these resources are invaluable to burn syntax in my mind.

• Learn Ruby The Hard Way — Learn Ruby The Hard Way
• Learn Ruby with the Neo Ruby Koans

Tools

• Rubular: a Ruby regular expression editor and tester serves as Ruby regular expression scratchpad.

Syntax Note

• Ruby Comment
• Ruby Variables
• Ruby String
• Ruby Array
• Ruby Conditions - if, case, etc.