Private Area

Hi Everybody!
I have to create a Private Area in a customer’s WordPress Website.
He wish to ave public pages like Home, Who, What we do, and some Private Pages.

The people that my costumer whant to be able to Login have to access in a Login Area where can be registred and choose one password, immage, ecc.

What Plugin do you recommended to do this?
I’m right with Payment Plugins too.

Waiting for news.
Thanks!!