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Go Programming🐹

Beginner→Advanced

Go 1.26

Build fast, reliable applications with Go, the language built for simplicity and performance

5

Sections

20

Lessons

27

Challenges

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20 lessons and 27 challenges, all 100% free.

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Go Toolchain & Modules

Go Workspace & GOPATH

Go Format Command(Sign in required)

Beginner+10 Mana

Module Initialization(Sign in required)

Beginner+10 Mana

Documentation & Go Doc

Building & Installing Go Programs

Documentation Convention(Sign in required)

Beginner+10 Mana

Go Environment Variables(Sign in required)

Intermediate+20 Mana

Variables & Basic Types

Go Program Structure(Sign in required)

Beginner+10 Mana

Numbers, Strings & Booleans

Short Declaration Quiz(Sign in required)

Beginner+10 Mana

Loops & Branching

Loop Keyword Quiz(Sign in required)

Beginner+10 Mana

Zero Values Matching(Sign in required)

Intermediate+20 Mana

Zero Value Quiz(Sign in required)

Beginner+10 Mana

Switch Statements

Switch Fallthrough(Sign in required)

Intermediate+20 Mana

Slices Deep Dive

Slice Append Quiz(Sign in required)

Beginner+10 Mana

Slice Operations & Gotchas

Slice Internals(Sign in required)

Intermediate+20 Mana

Predict Slice Capacity(Sign in required)

Intermediate+20 Mana

Map Zero Value Panic(Sign in required)

Intermediate+20 Mana

Map Key Check(Sign in required)

Beginner+10 Mana

Len vs Cap Quiz(Sign in required)

Intermediate+20 Mana

Structs Fundamentals

Methods & Receivers

Method Definition Syntax(Sign in required)

Beginner+10 Mana

Struct Embedding

Pointer Receiver Quiz(Sign in required)

Intermediate+20 Mana

Pointer Receiver Reasons(Sign in required)

Intermediate+20 Mana

Embedding Promotion(Sign in required)

Intermediate+20 Mana

Constructors & Factories

Constructor Naming(Sign in required)

Beginner+10 Mana

Implicit Interfaces

Empty Interface & Type Assertions

Interface Keyword Quiz(Sign in required)

Beginner+10 Mana

Error Check Idiom(Sign in required)

Beginner+10 Mana

Error Wrapping & Inspection

Error Wrap Verb(Sign in required)

Intermediate+20 Mana

Interface Concepts(Sign in required)

Intermediate+20 Mana

Error Handling Flow(Sign in required)

Intermediate+20 Mana

errors.Is vs errors.As(Sign in required)

Advanced+30 Mana

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20 interactive lessons and 27 hands-on challenges — learn in VS Code, Cursor, or the web.