Questions on use of Git/Github

First of all, you need to understand Git concept.
Git is a distributed version control system.

> If I am developing on my laptop and you are developing on your laptop, and we are both checking out code from github, where is the list of my commits kept? Is it up on the project's Github repo or is it on my local laptop?

It is on your local laptop. Unless you push it to GitHub.

GitHub is a hosting service for Git repositories.
https://docs.github.com/en/get-started/u...thub-works

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