Learning
Here is a collection of learning material that can help you get familiar and master the language.
Language Introduction
This course is targeted at novice Crystal programmers and conveys a basic understanding of the language's core concepts. Prior programming experience is recommended, but not required. This course can help you learn your first programming language.
link Tutorial: Language Introduction
Crystal Programming
Crystal Programming is a project-based book by George Dietrich and Guilherme Bernal that covers all the fundamental concepts needed to start programming in Crystal, such as OOP and concurrent programming.
Crystal for Rubyists
If you know Ruby, you are just a few steps from learning Crystal. From Core Team Member and Kemal creator Serdar Dogruyol comes this guide that will help you to transition from Ruby to Crystal.
Exercism Crystal track
Get your hands on Crystal with a series of exercises, and compare your solution to that of the many members who tried already.