Within your project, ensure you .gitignore node_modules.
If your program depends on another package, ensure you compile it on the local machine.
npm website, you need to login. Ensure you complete the form! Your email will also be shown with all the packages.
npm login to be able to login.
When you're inside the folder, ensure that you npm init.
Entry point will be the main file in the project.
If you have want to test this, you can use
npm install /path/to/package/