Become a Go Developer in 30 Days: The Ultimate Step-by-Step Learning Roadmap

Week 1: Basics of Go

Day 1: Introduction to Go

• What is Go? Features and use cases.
• Install Go and set up your environment.
• Write your first "Hello, World!" program.
• Learn Go syntax basics: variables, constants, and data types.

Day 2: Basic Syntax and Operators

• Learn basic operators: arithmetic, logical, and comparison.
• Input and output in Go (fmt package).
• Basic coding exercises (calculator, temperature converter).

Day 3: Control Flow

• Conditional statements: if, else, switch.
• Loops: for, break, continue.
• Nested loops and patterns (simple exercises).

Day 4: Functions

• Function declaration and calling.
• Parameters and return values.
• Named return values.
• Variadic functions.

Day 5: Arrays and Slices

• Understand arrays in Go.
• Work with slices (dynamic arrays).
• Common slice operations: append, copy, and slicing.
• Practice problems with arrays and slices.

Day 6: Strings and String Manipulation

• Strings in Go: basic operations.
• String formatting and concatenation.
• Common string functions from the strings package.
• Write a small program to count word occurrences in a string.

Day 7: Maps and Ranges

• Understand maps (key-value pairs).
• Adding, deleting, and updating map elements.
• Iterating with range.
• Practice: Word frequency counter using maps.

Week 2: Intermediate Go

Day 8: Structs and Methods

• Understand structs and how to define them.
• Add methods to structs.
• Create constructors for structs.

Day 9: Pointers

• Basics of pointers: & and * operators.
• Passing by value vs. passing by reference.
• Use pointers in structs and functions.

Day 10: Interfaces

• Understand interfaces and their importance.
• Implement interfaces with structs.
• Empty interfaces and type assertion.

Day 11: Packages and Modules

• Understand Go’s package structure.
• Create and use custom packages.
• Use Go Modules (go mod init and go.mod file).

Day 12: Error Handling

• Understand error handling in Go.
• Use the errors package.
• Custom error types and handling.

Day 13: File Handling

• Read from and write to files.
• Working with directories.
• Example: Create a program to log data to a file.

Day 14: Goroutines and Channels

• Understand Goroutines for concurrency.
• Channels for communication between Goroutines.
• Buffered vs. unbuffered channels.

Week 3: Advanced Go

Day 15: Select Statement

• Use the select statement to handle multiple channel operations.
• Example: Implement a timeout mechanism.

Day 16: Mutex and WaitGroups

• Synchronize Goroutines with Mutex.
• Use sync.WaitGroup for Goroutine synchronization.
• Practice: Write a simple worker pool.

Day 17: Context Package

• Use the context package for managing Goroutines.
• Example: Graceful shutdown of Goroutines.

Day 18: Testing in Go

• Write unit tests using the testing package.
• Table-driven tests.
• Benchmarking and examples.

Day 19: Reflection

• Learn about Go's reflect package.
• Use cases of reflection in dynamic programming.
• Example: Inspect struct fields and methods.

Day 20: Advanced Error Handling

• Use errors.Is and errors.As for error wrapping.
• Understand error propagation.
• Create custom error types with additional context.

Day 21: Logging

• Use the log package for basic logging.
• Integrate third-party logging libraries (e.g., Logrus or Zerolog).
• Structured logging in Go.

Week 4: Building Real-World Applications

Day 22: HTTP Server with net/http

• Build a simple HTTP server.
• Handle routes and serve static files.
• Example: Create a basic REST API.

Day 23: Middleware in Go

• Understand middleware in Go HTTP servers.
• Write custom middleware for logging and authentication.
• Practice: Add middleware to the REST API.

Day 24: Go with Databases

• Connect to a database using database/sql.
• Perform CRUD operations.
• Use GORM (Go ORM) for advanced database management.

Day 25: JSON and APIs

• Parse and generate JSON with the encoding/json package.
• Example: Consume a third-party API.

Day 26: WebSockets in Go

• Build a WebSocket server with gorilla/websocket.
• Example: Real-time chat application.

Day 27: Dependency Injection

• Understand dependency injection principles.
• Implement DI in your Go application.

Day 28: Build and Deploy

• Compile and build Go binaries.
• Use go build, go run, and go install.
• Example: Deploy a Go application using Docker.

Day 29: Go Modules and Versioning

• Advanced Go Modules usage.
• Manage dependencies and versioning effectively.

Day 30: Final Project

• Combine all your knowledge into a real-world project:
  • A complete REST API with CRUD, middleware, authentication, and database support.
  • Add logging, error handling, and deploy it using Docker.

Tips for Learning:

• Practice every day with real-world examples.
• Use online Go playgrounds (e.g., play.golang.org) for quick experiments.
• Refer to the official Go documentation: https://golang.org/doc/
• Contribute to open-source projects to deepen your understanding.