Learn CRYSTAL with Real Code Examples

Learn Ruby syntax basics

Understand Crystal type system and syntax

Write CLI tools and small scripts

Learn web frameworks (Kemal/Amber)

Master concurrency and fibers

Week 1: Syntax, types, and variables

Week 2: Classes, modules, methods, and exceptions

Week 3: Web frameworks and HTTP handling

Week 4: Fibers, macros, and high-performance patterns

Explain Crystal’s type inference system.

Difference between structs and classes?

How do fibers work in Crystal?

What is Shards used for?

How do macros work at compile-time?

crystal build file.cr # compile

crystal run file.cr # compile & run

crystal spec # run tests

shards install # install dependencies

fiber = Fiber.new { ... }

Programming Crystal

Crystal in Action

Crystal for Rubyists

Crystal Lang Getting Started

Kemal Web Framework Tutorial

Crystal Concurrency & Fibers Guide

Crystal Lang Official Documentation

Shards Dependency Manager Guide

Kemal Web Framework Documentation

Crystal Forum

Crystal GitHub

Crystal Slack Community

Crystal-lang official forums

Crystal Slack community

GitHub Crystal repositories

StackOverflow Crystal tag

Crystal blog tutorials