Facebook like and Find Us

Hi
Firstly I apologise if this has been asked before! I have 3 queries!

I added fblikebutton last month and since then I have tried to add other FB things. Now I’ve lost my like button and can’t find it in the plugins menu. Also can’t re-download it as it says it’s in the ‘home’ menu.

Home can I change things on my homepage? I can’t find a page for it to do things to it, for example changing widths of columns, locating forementioned like button!

I have made 2 codes on facebook. 1 for a like & 1 for a find us widget. But where do I put these codes? I don’t know how to make a widget!

Any help is appreciated!

Thanks!