Sad to say, based on my experience teaching weekend classes, it's difficult to introduce authorization or sessions in a book that's designed for beginners to re

Sad to say, based on my experience teaching weekend classes, it's difficult to introduce authorization or sessions in a book that's designed for beginners to read in a weekend. "Learn Ruby on Rails" is intended to prepare newcomers for more advanced books. Michael Hartl's book covers authorization so it is a good follow-on.