Free and Hidden content for suscribers in two columns

Hello,

I am new to WP so please use newbie friendly language.
I would like to offer content in two columns.
The left column is publicly visible.
The right column is offered to subscribers only.
So I have bought the subscribers plugin (http://www.wpboard.com/)
but I dont know how to procced in order to make this two column page.

Sorry for my English

Basil