How To Have Facebook Only Login And Registration

I am trying to obtain the ability to ONLY have social login and registration via Facebook/another social login

This means if a customer wanted to register or login on the site, it would have to be done using their social profile and data only, the normal registration fields would not appear

Can anyone help with what code needs to be changed/altered, and where to locate it.

FYI I do not have much coding experience, so if anyone has a solution, just provide me some clear steps.

Thanks so much

Try to hide default login fields in the login form and check the result