Thanks wasd. The next thing you could do, is highlight some C and ask the community any questions you have. I intend to keep writing the series, since there's easily enough material there for a book. If you signup for an Omniref account, you can follow the project and you'll be emailed whenever I post new content.

In fact, such a book has been written before already: http://patshaughnessy.net/ruby-under-a-microscope

This is an awesome book, and I highly recommend it. Just be aware that very little of the book concerns itself with C. The majority of the book is an excellent tour of the internals of the Ruby interpreter.

Also of interest might be this series of blog posts currently being written: Reconstructing Ruby in C [0]

[0] http://www.halogenandtoast.com/reconstructing-ruby-our-first...

That's a great book -- highly recommended. But there's plenty more ground to cover!

Thank you. I just found that that title is included in O'Reilly's Safari.