How to multiply to create rib stitch (I think that's right)

[neex]

Hello there,

I'm a newbie to working with patterns, so I'm still learning the terminology. I found this scarf pattern, it is supposed to be easy but I'm having problems understanding the instructions.

http://www.purlbee.com/easy-hand-kni...ke-stitch.html

The pattern mentions multiply 4 + 3 I have searched high and low for videos showing how to do this, but nothing!! I can be a little slow on the uptake so I can struggle to understand written instructions but any help, advice, illustrations would be gratefully appreciate.

Thank you so much!