The only thing I've seen lately that's moving fast enough to cover best practices is the new version of Michael Hartl's Ruby Tutorial<div><br></div><div><a href="http://ruby.railstutorial.org/ruby-on-rails-tutorial-book?version=3.2">http://ruby.railstutorial.org/ruby-on-rails-tutorial-book?version=3.2</a><br>
</div><div><br></div><div>It covers a lot of the things that other sources miss out but are very much a part of Rails dev now such as rvm, bundler+binstubs, Rspec, Cucumber, Spork, Guard, Twitter bootstrap etc. - it even covers attr_accessible in relation to Admin roles which can only be a good thing after the Github debacle!</div>