15 Things for a Ruby Beginner

The post gives a checklist for Ruby beginners who already know the basics and want to move forward. It recommends learning with an experienced developer when possible, and otherwise working through Ruby primers, koans, and community resources.

It also stresses the tools and concepts that make Ruby work well in practice, including RVM or rbenv, RubyGems, Bundler, Git, editors, Hashes, JSON and YAML, immutability, Ruby’s object model, object-oriented design, dynamic features like send and eval, metaprogramming, blocks, style guides, and readability.

Reading notes

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• Start with Ruby basics through primers, tryruby.org, Ruby Koans, or Why’s Poignant Guide to Ruby.
• Learn the common toolchain: RVM or rbenv, RubyGems, Bundler, Git, and GitHub.
• Pick one editor and learn it well, along with the Ruby plugins or package support it needs.
• Prefer Enumerable methods like each, map, select, inject, reject, and detect over while and for.
• Understand Hash behavior, default values, keys and values, and the difference between Ruby 1.8 and 1.9 ordering.
• Learn JSON and YAML because they are widely used in the Ruby ecosystem.
• Study immutability, object references, clone, and the difference between shallow and deep cloning.
• Keep Ruby’s object hierarchy in mind and use IRB to explore methods and object behavior.
• Think in terms of objects rather than classes when designing code.
• Know the Ruby features that matter for object design, including message passing, modules, mixins, and attribute helpers.
• Use Ruby’s dynamic runtime features carefully, especially send and eval, and be aware that eval is unsafe and unscoped.
• Learn metaprogramming tools such as define_method, method_missing, instance_eval, and class_eval.
• Use blocks and lambdas to build cleaner DSLs and functional-style code.
• Follow style guides when in doubt and prefer readability over premature optimization.
• If the topic feels overwhelming, keep writing code, read well-written Ruby code, and ask for help in Ruby user groups or IRC.