Resources to learn ruby

I am familiar with PHP and JSP. I am interested in learning ruby and would like some learning materials / resources / books to learn ruby. It would be better if the material / books / resource compares Ruby with PHP or JSP, as I prefer comparative learning. I would also like some suggestions for an IDE for ruby.

I've never come across a book that bridges PHP to Ruby, sorry.

I am a Ruby beginner, and here is what I have bookmarked.

Interactive, try now:
https://try.ruby-lang.org/

Free resources:

• https://ruby-doc.org/
• https://ruby-doc.org/docs/ruby-doc-bundle/UsersGuide/rg/index.html
• https://pine.fm/LearnToProgram/
• http://www.sapphiresteel.com/ruby-programming/The-Little-Book-Of-Ruby.html
• https://www.ruby-lang.org/en/documentation/quickstart/

I'm not a fan of Why's Poignant Guide - I think the book's (attempts at) humor are distracting. He knows his stuff however. It might be to your liking, so:

• http://poignant.guide/

Recommended not-free book for beginner:

• https://www.amazon.com/Well-Grounded-Rubyist-David-Black/dp/1933988657/

Programming challenges for practice:

• https://stackoverflow.com/questions/24692/where-can-you-find-funeducational-programming-challenges
• https://stackoverflow.com/questions/87657/what-are-some-good-programming-challenge-websites

I use SciTE for my Ruby interaction. It comes with the Ruby installer and does everything I need.