Books
Here is a list of books I read and can recommend to any Ruby-developer:
«Practical Object-Oriented Design in Ruby» — Sandi Metz.
«Metaprogramming Ruby: Program Like the Ruby Pros» — Paolo Perrotta.
«Confident Ruby: 32 Patterns for Joyful Coding» — Avdi Grimm.
«The Ruby Way: Solutions and Techniques in Ruby Programming» — Hal Fulton.
«Crafting Rails Applications: Expert Practices for Everyday Rails Development» — José Valim.
«Effective Testing with RSpec 3» — Myron Marston and Ian Dees
«Programming Ruby: The Pragmatic Programmers’ Guide» — Dave Thomas, Chad Fowler.
«Design Patterns in Ruby» — Russ Olsen.
«Effective Ruby: 48 Specific Ways To Write Better Ruby» — Peter J. Jones.
«Rails AntiPatterns: Best Practice Ruby on Rails Refactoring» — Chad Pytel, Tammer Saleh.
«Ruby Performance Optimization» — Alex Dymo.
«Growing Rails Applications in Practice» — Henning Koch and Thomas Eisenbarth.
«Refactoring in Ruby» — William C. Wake and Kevin Rutherford.
«99 Bottles of OOP» — Sandi Metz.
«Fearless Refactoring: Rails Controllers» — Andrzej Krzywda.
«Clean Code» — Robert C. Martin.
«Domain-Driven Design: Tackling Complexity in the Heart of Software» — Eric Evans.
«Implementing Domain-Driven Design» — Vaughn Vernon.
«Domain-Driven Design Distilled» — Vaughn Vernon.