Git and GitHub

Are you a working developer who has been using Git for months but still feels uneasy every time a merge conflict appears or a rebase goes wrong? Do you find yourself copying commands from Stack Overflow without truly understanding why they work or what they are doing to your repository? You are not alone, and this book was written specifically for you.

Git and GitHub: The Developer's Practical Guide is a focused, no-fluff reference for developers who already know how to code but want to stop guessing with version control. This book does not treat you like a beginner. It treats you like a capable developer who deserves clear, precise explanations of what is actually happening under the hood, from the object model that makes Git fast and safe, to the branching strategies and GitHub workflows that keep teams productive.

What you will learn:

• The mental model behind Git's three areas: working directory, staging area, and repository
• What commits, branches, and HEAD actually are at a structural level
• How to use git diff, git log, git stash, and git rebase -i with confidence
• How to resolve merge conflicts step by step and understand why they happen
• How pull requests, branch protection rules, and GitHub Actions work together in a professional CI/CD pipeline
• How to recover from common mistakes including lost commits, bad resets, and accidentally pushed secrets
• How to configure Git properly for your team with aliases, hooks, SSH keys, and signed commits
• How Git submodules and worktrees solve real problems and when to reach for each

Whether you are onboarding into a team with an established Git workflow or trying to become the developer your colleagues turn to when things go wrong, this guide gives you the understanding to work with Git deliberately rather than defensively.

The book follows you through twelve tightly structured chapters, from the .git directory internals to GitHub CLI shortcuts that eliminate browser context switching. Every command shown is real, every piece of terminal output is accurate, and every explanation is built around genuine developer workflows rather than toy examples.

If you have been using Git without truly understanding it, this is the book that closes that gap.