On 2010-12-29 21:39:07 +0100, Stu said:

> 
> For Theory:
> 
> The Well-Grounded Rubyist
> David A. Black
> ISBN: 1933988657
> 
> For Depth:
> 
> Metaprogramming Ruby: Program Like the Ruby Pros
> Paolo Perrotta
> ISBN: 978-1-93435-647-0
> 
> For Reference:
> 
> The Ruby Programming Language
> Yukihiro Matsumoto.
> ISBN: 0596516177

Thanks  for the suggestions

AM