Rahil, I would recommend reading the entire book if you’re new to Rails as
preparation for the forthcoming Rails 3.0. Why? The current Rails construct
will work as expected in Rails 3.0. If you haven’t read/viewed the following, I
would recommend that you do so at this time:
http://weblog.rubyonrails.org/2008/12/23/merb-gets-merged-into-rails-3
http://railsonedge.blogspot.com/2009/03/yehuda-katz-talks-about-rails-30.html
Good luck,
-Conrad