Info txt

Hi

When i post my new site @ facebook i see a txt:

Curabitur blandit tempus porttitor. Nullam quis risus eget urna mollis ornare vel eu leo. Etiam porta sem malesuada magna mollis euismod. Aenean lacinia bibendum nulla sed consectetur. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit.

Where do i edit that and change picture?

Attached picture, if the above dont give any meaning.

Are there really no one who can help me find the place to edit the txt and change the picture?