GitHub

GitHub hosts distributed version controlled code repositories (repos) and static websites. It can be used for any type of file but only text and image files can be compared for differences. It hosts open source projects for free.

The first time creating a repository

If you don't have one already, create a GitHub account.
On Windows install Git for Windows
Right click on an existing project folder to use as the repository, select Git Bash Here and enter Git commands in the terminal window.
Generate a new SSH key and add it to the ssh-agent.
Add the SSH key to your GitHub account.
Add the existing project to GitHub.

Cloning a project from a repository

Entering commands in a Git Bash shell window.
e.g. for the 4ms Company KiCad libraries, git clone https://github.com/4ms/4ms-kicad-lib
To update at a later date do git pull