请举出20个关于rails 实现 saas 的教程或书籍

1.《Ruby on Rails Tutorial》 2.《Agile Web Development with Rails》 3.《Rails Crash Course》 4.《Practical Rails 5》 5.《The Rails 5 Way》 6.《Rails 5 Test Prescriptions》 7.《Rails 5 Revealed》 8.《Rails 5 in Action》 9.《Mastering Ruby on Rails》 10.《Ruby on Rails 5.0 for Autodidacts》 11.《Ruby on Rails 5.0 for Beginners》 12.《Ruby on Rails 5.0 for Experts》 13.《Rails 5 Application Development》 14.《Beginning Rails 5》 15.《Learning Rails 5: Rails from the Outside In》 16.《Rails 5 Essentials》 17.《Rails 5 Bootstrap》 18.《Rails 5 Revealed: Discover What's New in the Latest Version of Ruby on Rails》 19.《Ruby on Rails 5.0 for Developers》 20.《Ruby on Rails 5.0 for Dummies