Expand your Ruby knowledge with deliberate practice

If you already know some of the fundamentals of the Ruby language, but you want to get some hands-on experience to expand your skills, I suggest taking a look at the following tools/platforms:

• Ruby key concepts on Exercism - All the concepts covered are explained in the context of language-specific paradigms and conventions.
• Ruby Koans - Learn the Ruby language, syntax, structure, and some common functions and libraries. You’ll also learn about culture and testing.
• Ruby Warrior - Game designed to teach the Ruby language in a fun and interactive way.
• Ruby Challenges - Open-ended challenges designed to test your problem-solving skills.
• Advent of Ruby - CLI tool for Advent of Code in Ruby that shows other people’s solutions.
• Cassidoo Newsletter - There’s also an interview question of the week, where you can test your skills and review the results the following week.