A github account ) must first been created in order to gather and maintain your code repos. Every new organization user will need to activate the github account with 2FA (Microsoft/Google authenticator), based on the email invitation received.
In order to work with github from a local machine, the following git tools need to be installed locally:
- Github desktop (https://desktop.github.com/). Users can use any editor to edit source code/scripts, such as Visual Studio Code

- Git windows client https://git-scm.com/download/win

The following Github intro guide provides instructions on basic operations on Github repositories and projects: https://guides.github.com/activities/hello-world/