Here is a curated links of sites that are I think are useful as I learn or relearn Ruby and Rails further. Incomplete of course but there's always the internet. Will add any that are worthy to be linked here. For now, this would suffice. If you think there are links worthy to be added here, let me know in the comment below. Thank you!

Ruby Official Documentation

• Ruby Documentation 1
• Ruby Documentation 2
• Ruby Documentation 3

Learn Ruby

• 150 Ruby Articles by Jesus Castello
• Idiosyncratic Ruby - Documenting All Ruby Specialities
• The Definitive Ruby Tutorial For Complete Beginners
• Launch School: Intro to Programming with Ruby
• Launch School: OOP with Ruby
• Launch School: Core Ruby Tools

Learn Rails

• Boring Rails - Direct to the point articles about rails
• Launch School: Demystifying Rails

Ruby Tools

• Curl to Ruby
• Ruby Cheetsheet