What are the best resources to learn Ruby?

Languages:Clojure, CoffeeScript, C++, C#, Crystal, Elixir, Java, Elm, Erlang, F#, Go, Haskell, Java, JavaScript, Kotlin, Common Lisp, Lua, Objective-C, Ocaml, Perl 5, PHP, PL/SQL, PureScript, Python, R, Racket, Ruby, Rust, Scala, Scheme, Swift, TypeScript

Features:Exercises

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Features:Projects, written tutorials

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Features:Code editor, forum, progress saver, written tutorials

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Features:Projects, quizes, video tutorials, editor, progress saver, forum

Languages:HTML, CSS, Javascript, Ruby on Rails, Swift for iOS

Features:Projects, Video Tutorials, Exercises, Code Editor