Just a quick personal anecdote for a different perspective:
When I wanted to learn Rails as a developer getting into web dev, I read the Rails Tutorial relatively quickly and did the major exercises. I thought it was well worth the time and would have bought a print copy to reference/scribble in if it had been released in a timely manner.
After that I got the Rails 4 Way, which I still refer to from time to time. It makes a pretty good reference or topical reader once you're more familiar with rails. It is more a book on how things are put together and why, as compared to 'this is how to do X step by step.' I imagine there will be a new edition for rails 5 soon. This would probably be my first recommendation for you coming from Django.
I didn't find the official documentation to be all that helpful until after I had finished that reading and understood the rails system a little better. Now I use the documentation a lot more. The rails source I occasionally refer to, but it is rather painful to read if you're not deeply entrenched in the ruby/rails metaprogramming idioms.
I also have a copy of Agile Web Development with Rails 4, and I never open it anymore. I tried to get through it, but I find it a rather poor book. It is very light on details, or just content in general. Personally don't think it's worth the time or money.
Obviously I like reference books, I find writing in margins and physically flipping pages helps me learn. YMMV!
When I wanted to learn Rails as a developer getting into web dev, I read the Rails Tutorial relatively quickly and did the major exercises. I thought it was well worth the time and would have bought a print copy to reference/scribble in if it had been released in a timely manner.
After that I got the Rails 4 Way, which I still refer to from time to time. It makes a pretty good reference or topical reader once you're more familiar with rails. It is more a book on how things are put together and why, as compared to 'this is how to do X step by step.' I imagine there will be a new edition for rails 5 soon. This would probably be my first recommendation for you coming from Django.
I didn't find the official documentation to be all that helpful until after I had finished that reading and understood the rails system a little better. Now I use the documentation a lot more. The rails source I occasionally refer to, but it is rather painful to read if you're not deeply entrenched in the ruby/rails metaprogramming idioms.
I also have a copy of Agile Web Development with Rails 4, and I never open it anymore. I tried to get through it, but I find it a rather poor book. It is very light on details, or just content in general. Personally don't think it's worth the time or money.
Obviously I like reference books, I find writing in margins and physically flipping pages helps me learn. YMMV!