A list of Rails books and their applications. Free books are tagged with (F)
Have a suggestion? Leave a comment. There are still books I need to read on the subject so some may not show up in this list yet.
Your first steps into Rails
Rails 4 in Action - https://www.amazon.com/Rails-Action-Revised/dp/1617291099
The definitive introductory text to Rails walking through everything from first steps to authentication systems
The Rails Tutorial (F) - https://www.railstutorial.org/
A free online tutorial guiding through the basics of Rails
More advanced books targeted at building your skills in Rails
The Rails 4 Way - https://www.amazon.com/Rails-Way-Addison-Wesley-Professional-Ruby/dp/0321944275
The definitive Rails tome covering concepts in more detail than the introductory books.
Multitenancy with Rails - http://leanpub.com/multi-tenancy-rails-2
Add multi-tenancy features to an existing application.
Books covering testing rails
Rails 4 Test Prescriptions - https://pragprog.com/book/nrtest2/rails-4-test-prescriptions
Walk through the basics of Rails testing for various parts of the framework with best practices.
Under advanced rails:
Advanced Active Record - https://leanpub.com/advancedactiverecord/
Deep dives on more advanced Active Record-related topics.