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Learn to organize your Go code into reusable packages by setting up modules, creating custom packages, and understanding Go's visibility rules. Discover how to use `go mod init` to establish a module with a go.mod file that defines your project's base import path. Create your own packages in separate folders with proper package declarations, then import and use them throughout your project. Master the distinction between exported functions (starting with uppercase letters) that can be accessed from other packages and private functions (lowercase) that remain internal to the package. Understand how Go's folder structure directly affects import paths, enabling you to organize code logically across multiple directories. Practice building maintainable applications by splitting functionality into focused, reusable modules that keep your main.go file clean and your codebase scalable for real-world development.
