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Beginner · Go

Go for Beginners

Start programming with Go, the simple, fast language behind much of the modern web. Print your first message, store data in variables, make decisions, loop, write functions, and organize data with slices, maps, and structs.

Go is a small, friendly language created at Google to power cloud services and website back-ends. This course assumes zero experience. In twelve short lessons you will write your first program, learn how packages and main fit together, work with variables, numbers, and strings, make decisions with if and else, master Go's single for loop, write functions that return more than one value, and collect data with slices, maps, and structs. You finish with a guided tour of a tiny real web server written in only a few lines of Go.

Beginner 12 lessons ~98 min Go
Start the course
01

Say Hello to Go

Meet Go, see how a program is put together from packages and a main function, and print your first words to the screen.

3 lessons
  1. 1 What is Go? A small, fast language that runs a big part of the internet 6 min
  2. 2 Packages and main How a Go program is organized, line by line 7 min
  3. 3 Printing with fmt.Println Make your programs talk to you 6 min
02

Remember and Decide

Store information in variables, work with numbers and strings, and teach your program to make decisions with if and else.

3 lessons
  1. 4 Variables and Types Give your data a name with var and := 8 min
  2. 5 Numbers and Strings Doing math and handling text 8 min
  3. 6 Making Decisions with if and else Programs that choose their own path 8 min
03

Repeat and Reuse

Master Go's one loop, package steps into reusable functions with multiple returns, and keep lists of values in slices.

3 lessons
  1. 7 The One Loop: for Every way to repeat yourself in Go 9 min
  2. 8 Functions and Multiple Returns Name a job once, use it everywhere 10 min
  3. 9 Slices: Lists of Values Keep many values together in order 9 min
04

Real Data, Real Programs

Look things up instantly with maps, model real things with structs, and peek at a complete tiny web server written in Go.

3 lessons
  1. 10 Maps: Look It Up Store pairs of keys and values 9 min
  2. 11 Structs: Model Real Things Bundle related values into one type 10 min
  3. 12 A Peek at a Tiny Web Server The famous few lines that serve the web 8 min