This topic is about coding studies: a specific coding practice exercise. First you'll learn how to do them, then see some coding studies in action.
Structure and internals of Ruby on Rails. Learn how to peek under the covers of your framework.
This site is a Rails app, with a series of articles about how it was written.
The CRuby interpreter manages its memory in a complex and interesting way. Knowing about it can help you optimise your Ruby programs and also just generally understand what's going on.
Want to understand the ins and outs of the Ruby interpreter's performance? Here are a series of articles explaining relevant parts of the interpreter and how you can optimise them. These are very ground-level, with a strong emphasis on the details of current Ruby specifically.
Writing software is a practical, experience-based skill like playing tennis, riding a bike or playing music. You get better by practicing. Like those other skills, it matters how you practice. This topic is all about how to practice and improve at writing software.