Learn GitHub

Collaborate, review, automate and ship on the platform where the world’s code lives.

Start learning 14 lessons · about 6.5 hours · free
About this track

Git tracks your history; GitHub is where teams build on it together. Pull requests, code review, issues, automated tests and releases are how modern software - from weekend projects to the largest companies - gets made.

You’ve just joined Dungeon Dash, a scrappy open-source retro game, as a volunteer. You’ll set up repositories and SSH keys, write great READMEs, triage issues, open and review pull requests, choose merge methods, and contribute through forks. Then you’ll automate the project with GitHub Actions - workflows, CI pipelines, matrices, secrets and deployments - and finish like a maintainer: semantic versioning, releases, security features and the gh CLI and API. Along the way you’ll run workflow job graphs, follow a pull request’s life, and spot problems in diffs and workflow files. Every exercise is a Python helper of the kind maintainers really write, and the capstone builds a release bot.

Before you start
  • The basics of Git: commits, branches and remotes (the Git track covers them).
  • Basic Python for the exercises: strings, lists, loops and functions.
  • A free GitHub account is handy for trying things, but not required.
  1. Unit 1 · 0/3 lessons

    GitHub foundations

    Git versus GitHub, repositories, remotes and authentication, and Markdown READMEs. Badge: Repo ready

    1. 0x001What is GitHub?Tell Git from GitHub, find your way around a repository page, and see how people collaborate there. 18 min 0/2 exercises solved 18 min 0/2 exercises solved
    2. 0x102Repositories, remotes and signing inCreate and clone repositories, authenticate safely with SSH keys or tokens, and set up .gitignore, a license and a README. 24 min 0/2 exercises solved 24 min 0/2 exercises solved
    3. 0x203Markdown and great READMEsWrite GitHub Flavored Markdown - headings, task lists, tables, code, alerts and links to issues - and a README people actually read. 22 min 0/2 exercises solved 22 min 0/2 exercises solved
  2. Unit 2 · 0/4 lessons

    Collaboration

    Issues and projects, pull requests and merge methods, code review, and contributing through forks. Badge: Team player

    1. 0x304Issues, labels and projectsReport bugs and plan work with issues, labels, milestones and templates, close them from pull requests, and track it all on project boards. 24 min 0/2 exercises solved 24 min 0/2 exercises solved
    2. 0x405Pull requests and the GitHub flowWork on branches, open pull requests that are easy to review, and choose between merge, squash and rebase merges. 28 min 0/2 exercises solved 28 min 0/2 exercises solved
    3. 0x506Code reviewReview pull requests kindly and effectively, use suggestions and review states, and route reviews with CODEOWNERS. 26 min 0/2 exercises solved 26 min 0/2 exercises solved
    4. 0x607Forks and open sourceContribute to projects you can’t push to, keep your fork in sync, and understand open-source licenses and etiquette. 26 min 0/2 exercises solved 26 min 0/2 exercises solved
  3. Unit 3 · 0/3 lessons

    Automation with GitHub Actions

    Workflows and triggers, CI pipelines with matrices and required checks, and secrets and deployments. Badge: Workflow wrangler

    1. 0x708GitHub Actions basicsAutomate anything with workflows: events trigger jobs on runners, and jobs run steps that call commands and reusable actions. 30 min 0/2 exercises solved 30 min 0/2 exercises solved
    2. 0x809Continuous integration pipelinesTest every change automatically with job graphs, matrices, caching and artifacts, and require green checks before merging. 32 min 0/2 exercises solved 32 min 0/2 exercises solved
    3. 0x9010Secrets, permissions and deploymentsUse secrets and variables safely, give GITHUB_TOKEN the least permission, gate deployments with environments, and publish with GitHub Pages. 28 min 0/2 exercises solved 28 min 0/2 exercises solved
  4. Unit 4 · 0/3 lessons

    Releases, security and power tools

    Semantic versioning and releases, security features and hardened workflows, and the gh CLI and API. Badge: Release captain

    1. 0xA011Releases and semantic versioningVersion with semver and conventional commits, tag releases, write release notes, and publish packages. 26 min 0/2 exercises solved 26 min 0/2 exercises solved
    2. 0xB012Keeping projects secureProtect accounts, dependencies, secrets and workflows with 2FA, Dependabot, secret scanning, code scanning, rulesets and hardened Actions. 28 min 0/2 exercises solved 28 min 0/2 exercises solved
    3. 0xC013The gh CLI and the GitHub APIDrive GitHub from the terminal with gh, and automate it with the REST and GraphQL APIs, pagination, rate limits and webhooks. 26 min 0/2 exercises solved 26 min 0/2 exercises solved
  5. Unit 5 · 0/1 lessons

    Capstone

    Build the release bot: versions, release notes, closed issues and contributor thanks from merged pull requests. Badge: Release bot builder

    1. 0xD014Capstone: build the release botTurn merged pull requests into a version number, release notes, closed issues and contributor thanks - the bot Dungeon Dash runs on every release. 45 min 0/3 exercises solved 45 min 0/3 exercises solved
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