1. Visit Gitlab site and create a new project following the online instructions
2. Install git on your local computer
3. Configure git username & email
git config --global user.name "username"
git config --global user.email "myemail@example.com"
4. Initialize git in your project directory and upload files
cd your_project_dir
git init
git remote add origin https://gitlab.com/myusername/myproject.git
git add .
git commit -m "Initial version"
git push -u origin master
In case it fails with a rejection you may need to execute "git pull" first and then "git push" as per above.