So you can have the source folder on GitHub and do commits from there.

You have a couple different options you can use git command line or use a client such as GitHub Desktop (Free) or GitKraken (GitKraken is free if you have the GitHub Student Pack). If you are new to git I recommend using a client as it is easier to learn.

1. Login to Github 
2. Go to the location of your project
3. Open up the folder in Terminal or Command Prompt or Git client
4. Initialize using the command bellow or the client the repository this will create a new repository on Github 

   git init

5. Commit the files and Push them to git using the client or with the commands below.

git commit -a

git push origin your_branch_name

 

I recommend you add a git ignore so you don't push some of the project files that eclipse creates as these should be regenerated for each user.

 

also never directly push to master as only code you know works should be there so create a new branch.

 

Edited September 14, 20178 yr by MDW01

I have a tutorial on setting up sourcetree and github here: http://jabelarminecraft.blogspot.com/p/minecraft-forge-publishing-to-github.html