I will not say that there is a Github data but there are some teams out there who are trying to get into the industry of community-contributed data some of them are as follows:-
Google Public Data
Google Fusion Tables
Let’s say if you are working on a project for yourself. Then there is nothing to show, but it will enable companies to better access data that is already existing on the internet. This could be easily adapted into an open-data community where members can share their data. To know more about such kind of things if you are an absolute beginner or you have a little knowledge of GitHub in that case to learn GitHub and all its concepts such as pull request or creating a repository in detail which is necessary for a programmer you can learn it by taking up the GitHub training course. If you like to read then you can have a look at the GitHub tutorial. If you want to learn it by watching the video tutorial then you can have a look at the following tutorial:- .