Welcome to the Github Community Forum! And also to Github!
Then you probably want to contribute to a project but you don't know how to do it and this is why exists the Github Explore.
If you want to help other people this is the community you ask for and for more informations you can read this post: Getting started with the GitHub Community Forum.
If you know Git, but not so much, you can read this awesome free book: git pro v2.
If you have more question ask and the community will give you an answer :)
Mark helpfull posts with Accept as Solution to help other users locate important info. Don't forget to give Kudos for great contents!