Go (Golang) for Beginners: Complete Course

This book is your reliable guide to the world of the Go language (Golang), created by Google for developing fast, reliable, and scalable applications. If you are already familiar with the basics of programming (variables, loops, functions) and want to master a modern language for backend development, cloud services, and DevOps tools — this course is designed for you.

The book is built on the "from simple to complex" principle and contains dozens of practical examples that you can immediately run and test. You will start with installing Go and setting up your working environment, and then step by step you will break down all the key features of the language.

What you will learn:

• Basic Go syntax: variables, data types, control structures, functions, and methods.
• Working with collections: arrays, slices, maps, and structs.
• Interfaces and generics — how to write flexible and reusable code.
• Concurrent programming: goroutines, channels, mutexes, and the worker pool pattern.
• Creating web servers using plain net/http and popular frameworks (Gin, Echo).
• Working with databases: SQL (database/sql, GORM) and NoSQL (MongoDB).
• Testing, profiling, and debugging code.
• Building and deploying applications (Docker, CI/CD).

Who this book is for:

• Beginner developers who have chosen Go as their first language.
• Programmers from Python, Java, or C++ who want to learn Go for backend development.
• DevOps engineers working with Docker, Kubernetes, and cloud technologies.

After reading, you will be able to independently write REST APIs, CLI utilities, network services, and microservice applications. The book contains ready-made projects: a simple web chat, a data parser, a task management system, and a Telegram bot.

The author is Alexey Sokolov, a senior backend developer with 8 years of experience in Go, a lecturer on educational platforms, and an author of technical articles. All examples are tested on the current version of Go (1.21+) and are accompanied by links to a repository with the source code.

Don't put off getting to know one of the most in-demand languages of our time — start your journey into Go today!