100 Days of Golang: A Complete Guide For Beginners

In the continuously evolving programming world, new languages are replacing older ones due to their features and significant features. Go (well known as Golang) has gained significant attention for its simplicity, efficiency, and concurrency capabilities. So in the next 100 days, we will explore the core concept, features, and best practices of Golang, learning advanced topics, building web scraping, and creating real-world projects. We will also ensure you gain a solid foundation and hard confidence to build your own Go projects.

What is Golang

Go or Golang is an open-source programming language, developed by Google and simplifies the development of efficient and reliable software applications. Golang is well known for its features such as simplicity, and ease of learning. Golang is used by many huge tech giants such as Google, Dropbox, Netflix, and more. Below are some reason that justifies why developer or businesses should choose Golang for their projects.

Why Golang?

1. Easy to learn: Go offers clean and easy syntax, which makes it easy for programmers from different technical backgrounds.
2. Efficiency: Go provides efficient compelling and garbage collections which result in optimal performance. performance.
3. Built-in Concurrency: Go offers built-in goroutine support which makes it powerful for building concurrent applications.
4. Highly Scalable: Go is highly scalable in terms of system efficiency which makes it ideal for cloud-native development.
5. Growing Ecosystem: A consistently increasing community and a rich ecosystem of libraries and tools make it widely adaptable among developers.

Overview of the 100-Day GoLang Learning Plan

The goal of this 100-day plan is to provide a comprehensive and structured learning experience in GoLang. By the end of the plan, you will have a strong understanding of GoLang's core concepts, advanced features, and practical applications. You will also build real-world projects and gain hands-on experience to confidently develop and deploy Go applications.

100 Days of Golang: A Complete Guide For Beginners

Days 1-10 Getting Started with Golang

Introduction to Golang (Day 1)

On the very first day of our 100-day journey we will start with knowing What is Golang, along with its evolution and history. We will also learn how to install Go on machines that we have(MAC, Windows, Linux).

Resources:

• What is Golang?
• Hello World! in Golang
• History and evolution of GoLang
• How to install Go on your machine (MAC, Windows, Linux)

Also Read:

• Golang vs C++
• Golang vs Java
• Golang vs Python

Setup Development Environment (Day 2)

On day two, we will choose our IDE(Visual Studio Code or Golang) based on our preferences and our system capability(such as RAM and processor) along with configuring IDE setup.

Resources:

• Choosing an IDE (Visual Studio Code, Golang)
• Configuring your IDE for Golang

Start with your First Program (Day 3)

On the third day, we will learn basic programming syntax and write a sample demo project “Hello world”, to make sure our Golang configuration is successfully completed.

Resources:

• Writing a sample demo app, "Hello, World!" program with Golang
• Understanding the Golang syntax

Learn the Basic Syntax and Data Type (Day 4)

After completing the “Hello World” program now we will learn about how to define and declare variables and which are data types(int, float, string and bool) supported in Golang.

Resources:

• Defining and declaring Variables and constants in Golang
• Basic data types (int, float, string, bool) in Golang
• Type inference in Golang
• Identifiers in Golang
• Keywords in Golang
• Data Types
• Variables
• Constants
• Rune in Golang
• Operators in Golang
• Scope of Variables
• Type Casting
• var Keyword in Golang
• Short Declaration Operator(:=)
• var keyword vs short declaration operator

Strings (Day 5)

• Strings in Golang
• Different ways to compare Strings
• Different ways to concatenate two strings
• Trimming a String in Golang
• Splitting a String in Golang
• Check if the given characters are present in String
• Repeating a String for Specific Number of Times
• Finding the index value of specified string
• Counting the Number of Repeated Characters in String

Conditional Statements (Day 6-7)

Conditional statements and loops are crucial parts of any programming language, so after exploring variable declaration and data-type support, now we will explore ways to use loops and conditional statements.'

Resources:

• Decision Making Statements
• Loops in Golang
• Loop Control Statements
• Switch Statement in Go
• Deadlock and Default Case in Select Statement

Functions (Day 8-10)

After covering loops and conditional statements, now we will learn how to declare and make calls to functions in Go, and then we will start learning how to create our own packages in use them in other classes.

Resources:

• What are the Functions?
• Variadic Function
• Anonymous Function
• main and init function
• Function Arguments
• Function Returning Multiple Values
• Named Return Values
• Blank Identifier
• Defer
• Methods
• Methods With Same Name

Days 11-20 Intermediate concept

Collection Classes (Day 11-12)

After learning the basics of Golang, on the 11th and 12th days, we will be covering further concepts such as Collection classes such as Arrays, slices, and Maps, which are crucial for storing values.

Resources:

• Arrays in Golang
• Copying an Array into Another Array in Golang
• Passing an Array to a Function in Golang
• Slices in Golang
• Slice Composite Literal
• Copying one Slice into another Slice
• Passing a Slice to Function
• Comparing two Slices in Golang
• Checking the Equality of Slices in Golang
• Sorting a Slice in Golang
• Trimming a Slice in Golang
• Splitting a Slice in Golang

Struct and Methods Basics (Day 13-14)

Golang offers struct that allows users to create user-defined types like classes in Java, it allows developers to define multiple types within the same type. Developers can define and access struct variables by creating a method inside it.

Resources:

• Defining and using structs in Golang
• Associating methods with structs Golang

Pointers (Day 15-16)

After learning struct and methods, we will explore pointers, which is a bit difficult to understand but a very important concept in terms of understanding how variables are referenced in memory, so we will spend two days learning Pointers.

Resources:

• Pointers
• Pointer to Pointer (Double Pointer)
• Pointers to a Function
• Returning Pointer from a Function
• Pointer to an Array as Function Argument
• Pointer to Struct
• Comparing Pointers
• Finding the Capacity of the Pointer
• Finding the Length of the Pointer

Error Management (Day 17-18)

Error management is one of the crucial parts of developing an application as it tells developers about what went wrong while performing operations. In this phase learn how to manage errors such as exceptions, network errors, and local errors.

Resources:

• Handling errors in Golang
• Custom error types with Golang

File Operations Handling (Day 19-20)

Understand the way File operation works in Go, and take knowledge of streams such as Output and Input streams, Learn the way how reading and writing files take place in Go.

Resources:

• Reading and writing files with Golang
• Working with different file formats in Golang

Days 21-40 Background Task and Concurrency

Goroutines (Day 21-23)

Understand how background processes are carried out in Go, start from basics, and also learn advance, learn Goroutines and its usages in Go.

Resources:

• Introduction to goroutines in Golang
• Creating and managing goroutines in Golang

Channels and Select Statement (Day 24-29)

After learning Goroutine, the next topic to learn is Channels, how channels work in Go, how data is sent using the channel, and how the statement can be used for multiplexing channels.

Resources:

• Understanding channels in Golang
• Sending and receiving data through channels in Golang

Synchronization Operations Context package(Day 30-35)

Understand synchronization operations in Go, how to use Waitgroups and Mutex routine synchronizing, and manage long-running operations.

Resources:

• Using WaitGroups and Mutexes in Golang
• Synchronizing goroutines in Golang
• Managing context for long-running operations in Golang

Concurrency (Day 36-40)

Explore various concurrency patterns in Golang such as Race conditions, Buffered channels, and Waitgroup, you can also build demo applications that represent these concurrency operations.

Resources:

• Common concurrency patterns in Golang
• Building concurrent applications in Golang

Days 41-60 Cover Advanced topics

Basics of Interfaces (Day 41-43)

Interface is a very critical concept in OOP, in this phase start working deeply with interfaces, assertion, and type switches, this will help us achieve abstraction and reduce code redundancy.

Resources:

• Defining and using interfaces in Golang
• Type assertions and type switches in Golang
• Multiple Interfaces
• Embedding Interfaces
• Polymorphism Using Interfaces

Unit and Automation Testing (Day 44-46)

The unit test helps in overcoming issues that may occur in production, writing test cases helps developers in doing regression quickly, so in this phase take deep knowledge of Unit and automation testing.

Resources:

• Writing unit tests in Golang
• Using the testing package in Golang

Reflection Fundamentals and Benchmarking (Day 47-52)

Explore the reflection concept in general and learn how it can be achieved in Golang, understand its basics, and implement it practically. Take a deep dive into automation testing and learn packages for benchmark testing in Go.

Resources:

• Understanding reflection in Golang in Golang
• Practical use cases of reflection with Golang
• Benchmarking your Golang code
• Optimizing performance using Benchmarking

Understand Generics concepts (Day 53-55)

Generics can help developers write flexible and efficient code, it is an essential part of languages such as Java, in which you can explore Type to achieve generics.

Resources:

• Introduction to generics in Golang

Start with Web development(Day 56-60)

Before going to work on real-world projects now we will start with developing some web applications that include all the topics that we covered so far.

Resources:

• Building web applications with the net/http package in Golang
• Creating RESTful APIs using Golang

Days 61-80 Building Real-World Projects

Building CLI Applications (Day 61-65)

After completing advanced topic learning, in this fifth stage, we will build CLI applications with Golang, and explore how to achieve command line arguments parsing with Golang.

Resources:

• Building command-line applications using Golang
• Parsing command-line arguments in Golang

Web Scraping Practices (Day 66-70)

Understand the scraping concept basics to advance, explore how to create a scraper using Golang, and how to create a web server with the use of Golang.

Resources:

• Introduction to web scraping with Golang
• Building a web server with Golang

Microservices Understanding (Day 71-75)

Microservices are a critical and crucial concept in Web development, take a deep knowledge of how to create and work with microservices in Golang along with how to use them efficiently to achieve the best performance.

• Introduction to Microservices Architecture with Golang
• Building microservices using Golang

Learn Fundamentals of Cloud Integration (Day 76-80)

AWS and GCP are two giant players in the world of cloud providers, in this phase, we will take knowledge of AWS and GCP along with how to integrate them with Golang.

Resources:

• Integration of Golang applications with cloud services such as AWS, GCP

Days 81-100: Final Project, Best Practice, and Review of Advanced Resources

Final Project Development (Day 81-90)

Now, we are all set to start with our real-world projects, using the concepts that we learned so far. Finalize challenging project definitions and implement them using best code practices.

• Choose your project definition and Start implementation of your project with Golang
• Implement learned concepts and features

Resources:

• Top 10 Golang Project Ideas with Source Code in 2024

Code Review and Code Optimization (Day 91-95)

Read best practices while working with Golang, do regularly review your and peer's code, which can help in removing redundancy in code and improve code quality.

Resources:

• Reviewing your code for best practices with Golang
• Optimizing your code for performance and readability with Golang

Sharing and Collaboration in Various Communities (Day 96-100)

Create your own projects on Git and share them on Github, which also allows other developers to contribute to your projects, give contributions to other open-source projects, and raise PRs.

Resources:

• Create and share your projects on GitHub
• Collaborating with the Golang community

Conclusion

Congratulations as we have completed our 100-day journey of learning Golang. We covered the fundamentals, intermediate and advanced topics, and building real-world projects. Remember, the key to success in any language is to keep practicing and learning. You should also keep building and contributing to open-source projects, attend meetups and seminars, join active communities, and keep reading official documents to keep yourself up to date with the latest trends.