Teams expect you to use Git from your first day, whether at a national service placement, a local startup or a remote company. Teams use it to track every change, work on features without breaking each other's code and review work before it goes live. For you as a job seeker, a GitHub profile with real projects is often the first thing an employer looks at.
What Git does
Git is a tool that records snapshots of your project over time. Each snapshot is a commit, with a message saying what changed. If you break something, you can look back at older commits or undo a change. Git works offline, which is great when your data bundle is low. You only need the internet when you share your work.
GitHub, GitLab and similar sites host Git projects online so others can see them and work with you.
The everyday loop
git init # start tracking a folder
git status # what has changed?
git add server.js # stage a file
git commit -m "Add order route"
git push # send commits onlineWrite commit messages that explain the change in a few words, such as "Validate phone number on signup". Future you, and your teammates, will thank you.