This guide for my own reference please don’t rely on it, for a better introduction check out Git Reference website.

Basic concept and terminologies, Git have 3 logical places:

• Working Area: normal directory where you edit your project.
• Staging Area: Think of the staging as your project state before you start your coding session, after each coding session you add your changes to staging area using git add filename or git add .
• Snapshot Area: After multiple coding sessions you would finish a logical change, e.g. adding commenting system in web site, next you need to store a snapshot of your project after these changes, you would do that with git commit

Setting the environment: