Go in Practice

A practical Go course for an experienced developer (mid-level+) who wants to confidently write server code, CLI tools, and concurrent services in Go. Pace: 1–2 hours a day, ~3 weeks.

Go was designed at Google for large server systems: simplicity, readability, fast compilation into static binaries, powerful concurrency (goroutines and channels). The language is deliberately minimal — fewer features, but each one thought through; one obvious way to do things. This makes Go ideal for backends, microservices, and infrastructure tools (Docker, Kubernetes, Terraform are written in Go).

Topics build up: the toolchain and syntax basics, the type system (pointers, structs, slices, maps), methods and interfaces (duck typing), error handling as values, a mini-project, concurrency (goroutines, channels, select), the standard library and HTTP servers, testing and a final project, the ecosystem and next steps.

Each lesson contains theory with visual diagrams (PNG diagrams and mermaid), code examples, a checklist of practical tasks, and a quiz. Go’s main principle: simplicity over cleverness — if code can’t be understood in 30 seconds, rewrite it simpler.