For anyone starting a career in software development, Git and GitHub are two of the first tools you’ll be expected to know — and confused about, at first. Git is the version control system; GitHub is a platform that hosts Git repositories online. Understanding the difference, and how they work together, is foundational to working on any real coding project.
What Version Control Actually Solves
Before Git, developers often tracked changes by saving files with names like final_v2_reallyfinal.js — messy, error-prone, and impossible to collaborate on safely. Git solves this by tracking every change made to a project over time, letting developers see exactly what changed, when, and by whom, and revert to any previous state if something breaks.
The Core Git Commands to Know First
A handful of commands cover most day-to-day Git usage: git init starts tracking a project, git add stages changes you want to save, git commit saves those changes with a message describing what changed, and git push sends those changes to a remote repository like GitHub. Learning these four commands well is enough to start using Git productively on real projects.
Branches: Working Without Breaking Things
Branches let developers work on new features or fixes in an isolated copy of the project, without affecting the main codebase. Once the work is tested and ready, it gets merged back into the main branch. This is especially important on team projects, where multiple people are working on different features simultaneously without stepping on each other’s changes.
What GitHub Adds on Top of Git
While Git works entirely on your own computer, GitHub provides a place to store repositories online, collaborate with other developers, and manage projects through features like issues and pull requests. A pull request is essentially a formal request to merge your branch into the main project — it’s also where code review happens, letting teammates comment on and approve changes before they go live.
Common Beginner Mistakes to Avoid
New developers often commit too infrequently, bundling unrelated changes into one giant commit that’s hard to review or revert. Writing small, focused commits with clear messages makes a project’s history far more useful — both for yourself and anyone else working on the code later.
Git and GitHub can feel overwhelming at first, but the core workflow — branch, commit, push, pull request — becomes second nature with repetition. Once it clicks, it’s hard to imagine working on any serious project without it.
