---
title: Crystal Programming
page_title: "Building efficient, safe, and readable web and CLI applications with Crystal"
layout: book
section: learning

book:
  cover_image: /assets/learning/crystal_programming.png
  description: |
    <strong>Crystal Programming</strong> 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.
  details: |
    While focused towards those with programming experience, previous knowledge of Crystal itself is not required, as
    the book is outlined with step-by-step explanations of essential concepts and practical examples. By the end of
    this book, you’ll be equipped with the skills you need to use Crystal programming for building and understanding any
    application you come across.
  vendors:
  - url: https://www.amazon.com/Crystal-Programming-project-based-introduction-applications/dp/1801818673/ref=sr_1_2
    name: Amazon
  - url: https://www.packtpub.com/product/crystal-programming/9781801818674
    name: Packt

what_you_will_learn:
- image: icons/merge-type.svg
  description: Explore how Crystal combines the merits of other languages
- image: icons/folder.svg
  description: Understand how to leverage existing C libraries without writing any C
- image: icons/update.svg
  description: Focus on zero-cost abstractions with compile-time macros
- image: icons/code.svg
  description: Use an example-based approach to demonstrate language features
- image: icons/apps.svg
  description: Develop a variety of Crystal applications, such as web and CLI apps
- image: icons/library-books.svg
  description: Gain an understanding of the macro API and annotations

authors:
- image: /assets/learning/george.png
  description: |
    <strong>George Dietrich</strong> is a software engineer, open-source aficionado, and Crystal community moderator. He
    holds a Master of Science degree in internet information systems and a Bachelor of Science degree in
    information sciences.
- image: /assets/learning/guilherme.jpg
  description: |
    <strong>Guilherme Bernal</strong> is the chief technology officer at Cubos Tecnologia. He holds a bachelor's
    degree in TI management. Guilherme co-founded a software development company
    and several tech start-ups, including one that focused on teaching programming
    skills to a new generation of developers. He is also a two-time world finalist
    in the coding competition, ACM ICPC.
---