Rails Recipe's was my thought too.  It's basically walks you through  
solid approaches to various problems, you'll recognize most  
everything, but will help you get your mind on the right track.  I  
still find my AWD to be a very useful resource.  Additionally there  
is a wealth of information online, especially look for open source  
rails apps, download the whole thing and read the source.  What you  
don't understand look up in AWD.