social icons in header

Hi guys,

i read and tried all the suggestions about putting social icons in header but i cannot make nothing at all. I’d want to put some social icons in my header just like they are in this theme:
http://wegraphics.net/demo/item/bello/

I’m currently use Cascade theme by alpine press. Here is my site: http://provasiti100.altervista.org/

Please help me i’m getting really mad!