Ultimate Go Notebook

Introduction

The book Ultimate Go Notebook (2021) by William Kennedy is not just another textbook on the Go language. It is a concentrated experience from one of the world's leading experts on Golang, the creator of the popular Ultimate Go course and co-author of the book Go in Action. Unlike classic tomes, this "notebook" is a structured set of notes, examples, and patterns that is ideal both for quickly diving into the language and for daily use as a reference.

What the book is about

The book covers all key aspects of the Go language, from the basics of syntax to advanced topics such as concurrency, memory management, and API design. The main emphasis is on practical application: each concept is accompanied by real code examples that can be tried out immediately. Special attention is paid to idiomatic Go style — how to write code that is readable, efficient, and follows community best practices.

Who this book is for

The book is intended for developers who already have programming experience in other languages (Java, Python, C++) and want to quickly and deeply master Go. It will also be useful for those who already write in Go but want to systematize their knowledge, learn about the intricacies of the scheduler, GC, and internal language mechanisms. The book may seem difficult for programming beginners due to the high density of information.

What the reader will learn

• Basics of syntax and data types: variables, constants, slices, maps, structs.
• Interfaces and composition: how to properly design abstractions in Go.
• Concurrency: goroutines, channels, synchronization patterns (fan-in, fan-out, pipeline).
• Memory management: stack, heap, escape analysis, working with GC.
• Testing and profiling: unit tests, benchmarks, pprof.
• API design: error handling, logging, configuration.
• Advanced topics: reflection, cgo, garbage collection, scheduler.

Strengths

The main advantage of the book is its conciseness and practical focus. The author does not waste time on general discussions, but gets straight to the point. Each chapter is a self-contained block that can be studied in any order. The code examples are verified and correspond to the latest versions of Go (at the time of release — 1.16). The section on concurrency deserves special mention: it is written so clearly that even complex concepts become understandable. The book also contains many tips on performance optimization and avoiding common mistakes.

Who it is recommended for

I highly recommend Ultimate Go Notebook to everyone who wants to move from the level of "just writing in Go" to the level of "understanding how Go works." It is an ideal companion for those taking the Ultimate Go online course, as well as for teams adopting Go in production. If you are looking for one book that will cover 80% of practical questions about the language — this is it.