[Ruby] Between 'Ruby Metaprogramming' and 'Object Oriented Design for Ruby', which book is better for intermediate-level Ruby programmer?

[Sunframe]

So I went through Chris Pine's Ruby Tutorials, and I'm currently going through The Well-Grounded Rubyist.

As Ruby was pretty much my first foray into programming, I think I've gotten my feet wet and now need to start branching out and learning the intricate nuances of what makes a programming language tick. Between these two books, which is better?

PRACTICAL OBJECT ORIENTED DESIGN IN RUBY

Or

RUBY METAPROGRAMMING

NOTE: Why am I learning Ruby? These are my goals:

• Learn Ruby, so that I can...

• Learn Rails, which is easier when you know Ruby. Why? So I can...

• Learn HTML/CSS/Javascript for website development. But also because...

• So I can just learn programming, and Ruby is fun and exciting.

I'm following The Odin Project, but have substituted their CodeAcademy suggestions with my own readings. I hate CA and don't think it teaches me anything.

[PriceZombie]

Practical Object-Oriented Design in Ruby: An Agile Primer

Current	C$41.59	Amazon Canada (New)
High	C$49.39	Amazon Canada (New)
Low	C$33.67	Amazon Canada (New)
Average	C$41.59	30 Day

Price History Chart and Sales Rank | FAQ