How I finally Learnt Ruby on Rails
Andre Scott

Great article and very true. Pragmatic Studio and Hartl are excellent resources. A large part of the difficulty is the terseness of the official Rails Guide. I know documentation is not fun to write for people who can — and would rather — code, but Rails will continue to dwindle unless this is addressed. FWIW, I have a copy of The Rails 4 Way (book) and have reviewed it on Amazon.