---
title: Tutorials
description: Learning-oriented walkthroughs that take you from an empty Cargo project to a CLI with a complete diagnostic error path.
tags: [tutorials]
---
# Tutorials
Start here if you have not used `rtb-error` before. Tutorials build something
from nothing and explain as they go; the [how-to guides](../how-to/index.md)
assume you already have a project and want one specific task done.
| [Give your CLI a diagnostic error path](01-give-your-cli-a-diagnostic-error-path.md) | A small CLI whose errors carry a code, a help line and a support footer, whose panics render the same way, and which exits with a code you chose | About 20 minutes |