Not bad considering the topic it can be read and mostly used very easily.
I would never consider this book as "completely-read".... guess It will spend many months close to my desk!

Read only Part 1 (Facets of Ruby) explaining Ruby 3.3 version of the languages. Rest of the part's are akin to reference than tutorial so can be skimmed through as needed. Overall I got what I needed for a gig.

A tour de force journey through the dynamic, object-oriented language known as Ruby, with over 200 pages of new material and full descriptions of all the standard library modules. Covers strings, classes, blocks, and regular expressions with thorough examples. This book has such a reputation as the definitive reference for learning Ruby that it is simply called "The Pickaxe Book" in the programming community. There are many Ruby tutorials and references on the web, but the beauty of this book is that it is both well-written and provides a compendium of what you really need to know about Ruby that can't be easily sourced and collected. This is the ultimate book for both learning Ruby and use as a desk reference.

There are many great programming books but this is the best, most applicable, most practical, most comprehensive and even most readable programming book I've ever read. 5

This book lacks structure and organization. It constantly jumps from simple to complex examples and it's hard to get the author's intention. It's just too confusing. In parallel, I'm reading Apple's Swift book. It's impossible not to compare. I'm not talking about the language, but how the books were structured. Apple targets the reader, making the programmer comfortable with the language. This book is the opposite. It made me feel uncomfortable with Ruby. I might use it as a reference book, but with the Internet, I doubt I'll be searching for anything here. Well, time to reactivate my TeamTree House account... http://teamtreehouse.com/library/topi...

Draft

「Rubyらしい書き方」への傾倒が凄くて、入門書として買うには若干不適切だと思った

Can't ask more of a programming book.

The definitive resource and reference on the Ruby programming language.

A true "gem" of a language. This book is important because it kickstarted global awareness of a Japanese programming language towards a constantly growing legion of fans.

Would highly recommend starting off with this one + then getting "The Ruby Programming Language"

Biblia ruby'ego.

pretty good book. cover every aspects of ruby.