What are the best Ruby / Rails book available right now ?
Note : I know that this question has probably been asked before. But things change so much in the Ruby / Rails world that some of the books are not up to date or even teaches things that are deprecated in the newer release of Ruby / Rails.
For learning Rails and Ruby, I typically recommend (and refer to!):
Agile Web Development with Rails – Pragmatic Bookshelf (and co-written by DHH – creator of Rails)
The Rails Way – Addison-Wesley
Programming Ruby (The pickaxe book) – Pragmatic Bookshelf
The Ruby Programming Language – O’Reailly