Create a local repository and upload it to git&github

1. On local PC:
create a new folder and enter it, say Mytest
git init : Here, Mytest is the folder name
Then you can add files in this folder.
2. Create a repository on Github
copy the link
git remote add origin https://github.com/user_name/Mytest.git
You can jump over it if a Github repository already exists.
3. Upload to git
git add xxx or .
When you add all the files, then commit them.
git commit -m "some messages"
Then push it into github
git push origin master