Brief Japanese description for programmers experiencing other object-oriented languages to learn Ruby

Why don't you look around here in chapter 4 of the Ruby on Rails tutorial?

http://railstutorial.jp/chapters/rails-flavored-ruby?version=4.0#sec-strings_and_methods

Of course, it's part of Ruby on Rails tutorials, so it's based on Rails experience and web application development knowledge, but if you have some experience in object-oriented language, you can skip or imagine what you don't understand.

I recommend my first book called Ruby.

http://www.amazon.co.jp/dp/4873113679

I think you can refer to the book review here.

http://blog.livedoor.jp/dankogai/archives/51077051.html

Soft Ruby for a quick taste There is a sentence saying

Since Ruby's characteristics are highlighted, it's probably designed to show Ruby's characteristics if you're a programmer with experience in other object-oriented languages.

What about the Ruby Reference Manual?Originally a reference, the introduction includes what Ruby is and language specifications.

As for Rails, how about this?The Rails tutorial seems to be quite concise, so it would be good if it was at the introduction level.It's like you can make an app like Twitter right away.
Introduction to Ruby on Rails that even elementary school students can understand

I'm familiar with other object orientation, and I'd like to taste it roughly. How about 7 Languages Seven Worlds (Ohm Corporation).It's a book about working on one language for a week (actually three days).(Originally a pragprog book)

It includes languages other than Ruby, but it starts with Hello World in interpreter and eventually touches on the foundation of meta-programming, which is good to learn about the powerful aspects of Ruby.

Also, regarding Appendix, although the older version (which I found in Second Edition) has a proper tutorial, the latest version has chapter 4 devoted to Ruby's description, and the configuration of the book varies depending on the version.Therefore, I think it would be better to specify which version of Appendix.