Hello, I read about the MacRuby project a few days ago, and I've decided it would be nice to try to learn more about it, and then maybe actually write some applications using it. But the problem is, while I'm quite good at Ruby (I work as a Rails developer), I'm completely new to Cocoa programming and even to Macs in general. So I'd like to ask you, could you recommend me some [e]books or other sources of information that would help me get started? Should I get some book about general Cocoa programming (non-Ruby) at first? Or maybe something about RubyCocoa, like this http://pragprog.com/titles/bmrc/rubycocoa ? How big difference is there between programming in RubyCocoa and in MacRuby - is it small enough to be able to learn everything from a RubyCocoa book and then just change a few simple things to adapt that knowledge to MacRuby? Thanks in advance for any help, Jakub Suder