How to use embed code

Hi all,
Im trying to master wp.
Some1 is customizing a theme I bought online and I am seeing many interesting plugins and widgets I want to put on the site.
BTW, its a fashion and beauty magazine site.

One of such widgets I want to put is here and I need it to be on the sidebar. For now, I want to know how to use the embed code that widgetbox generates for me – where and how do I place it ?

BUT most of all, I need some1 that can build such sidebar widget for me, as I dont know how to do that .

I have other interesting plugins and widget ideas I have which I would also love to have some1 customize, and I guess it wount be too hard as I have seen the resources to do them or seen them in bits and pieces as other utilities.

Pls reply if you can assist me.

Thanks,

danny