Based on all the great comments I received about the draft of my MacRuby book http://macruby.labs.oreilly.com I decided to rewrite the introduction chapter and move away from the AddressBook example and instead built a hello world GUI app. [image: ch01_hello_world.png] http://macruby.labs.oreilly.com/figs/ch01_hello_world.png I just republished the first chapter online http://macruby.labs.oreilly.com/ch01.html and I would really appreciate your help reviewing it and letting me know what you think. I received quite a few questions about the book content and/or MacRuby questions related to the book. While I don't mind responding by emails, I figured it would be best if we would do that in public way so I created a new google group for people reviewing the book but also for people learning MacRuby through the book: http://groups.google.com/group/*macruby-book-review*<http://groups.google.com/group/macruby-book-review> Thanks, - Matt