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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.


  • Hello World – A simple program that prints a famous first message
  • Variables – Introduction to variables and assignments
  • Math – Basic numbers and algebra
  • Strings – Examples on how to modify strings
  • Control Flow – How to structure a program with conditionals and loops
  • Methods – Introduction to methods, arguments and type restrictions