Where to save project and how to show them?

Hi,
I’m new to coding and I would like to create my own projects.
I saw people using github and codepen or something like that.

But if I would go to an interview, and want to show my portfolio. How and where should I keep te projects?

You can put it in the brief case. Don’t mind I’m just kidding.

You can provide your portfolio website url in the interview.